Q: Is 231,855 a Prime Number?
A: No, 231,855 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 231855 can be evenly divided by 1 3 5 13 15 29 39 41 65 87 123 145 195 205 377 435 533 615 1,131 1,189 1,599 1,885 2,665 3,567 5,655 5,945 7,995 15,457 17,835 46,371 77,285 and 231,855, with no remainder.
Since 231,855 cannot be divided by just 1 and 231,855, it is not a prime number.