Q: Is 231,309 a Prime Number?
A: No, 231,309 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 231309 can be evenly divided by 1 3 9 13 27 39 117 351 659 1,977 5,931 8,567 17,793 25,701 77,103 and 231,309, with no remainder.
Since 231,309 cannot be divided by just 1 and 231,309, it is not a prime number.