Divisor 9531

To determine if any number is divisible by 9531, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 27 and 353 - then it is divisible by 9531.

The following tests must pass:

• Test if a number is divisible by 27
• Test if a number is divisible by 353

Easy!