Q: Is 1,231,518 a Prime Number?
A: No, 1,231,518 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 1231518 can be evenly divided by 1 2 3 6 205,253 410,506 615,759 and 1,231,518, with no remainder.
Since 1,231,518 cannot be divided by just 1 and 1,231,518, it is not a prime number.