Q: Is 1,231,628 a Prime Number?
A: No, 1,231,628 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 1231628 can be evenly divided by 1 2 4 163 326 652 1,889 3,778 7,556 307,907 615,814 and 1,231,628, with no remainder.
Since 1,231,628 cannot be divided by just 1 and 1,231,628, it is not a prime number.