Divisor 13231

To determine if any number is divisible by 13231, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 101 and 131 - then it is divisible by 13231.

The following tests must pass:

• Test if a number is divisible by 101
• Test if a number is divisible by 131

Easy!