Number Utilities

Reverse Number

Reverses the digits of any number, turning 12345 into 54321. Access via MCP in Cursor or Windsurf for AI-powered math operations, or call GET /v1/number/reverse directly. Handles positive/negative integers and preserves sign — useful for palindrome checks, digit manipulation algorithms, and mathematical transformations.

API Endpoint

GET /v1/number/reverse

Code Examples

curl "https://tinyfn.io/v1/number/reverse" \
  -H "X-API-Key: YOUR_API_KEY"

const response = await fetch('https://tinyfn.io/v1/number/reverse', {
  headers: { 'X-API-Key': 'YOUR_API_KEY' }
});
const data = await response.json();
console.log(data);

import requests

response = requests.get('https://tinyfn.io/v1/number/reverse',
    headers={'X-API-Key': 'YOUR_API_KEY'})
data = response.json()
print(data)

Use via MCP

Add to your AI agent

Connect your AI agent (Claude, Cursor, Windsurf, etc.) to TinyFn's number tools:

{
  "mcpServers": {
    "tinyfn-number": {
      "url": "https://tinyfn.io/mcp/number",
      "headers": {
        "X-API-Key": "YOUR_API_KEY"
      }
    }
  }
}

Learn more about MCP setup →

Related Tools

FAQ

How does reverse number handle negative numbers?

Preserves the negative sign while reversing only the digits. For example, -12345 becomes -54321, not 54321-.

What happens when I reverse a number ending in zeros?

Leading zeros are dropped from the result since they're mathematically insignificant. 12300 reversed becomes 321, not 00321.

Can I use this with MCP agents for palindrome detection?

Yes, compare the original number with its reverse using MCP tools in Claude or Cursor to check if a number reads the same forwards and backwards.

Does reverse number work with decimal numbers?

No, it only processes integers. Decimal points and fractional parts are not supported — use integer inputs only.

What's the maximum number size I can reverse?

Handles standard integer ranges safely. Very large numbers may hit language-specific integer limits, but typical use cases work fine.

Try Reverse Number Now

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