Q: Is 1,428,231 a Prime Number?
A: No, 1,428,231 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 1428231 can be evenly divided by 1 3 7 21 23 69 161 483 2,957 8,871 20,699 62,097 68,011 204,033 476,077 and 1,428,231, with no remainder.
Since 1,428,231 cannot be divided by just 1 and 1,428,231, it is not a prime number.