Q: Is 1,191,231 a Prime Number?
A: No, 1,191,231 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 1191231 can be evenly divided by 1 3 9 107 321 963 1,237 3,711 11,133 132,359 397,077 and 1,191,231, with no remainder.
Since 1,191,231 cannot be divided by just 1 and 1,191,231, it is not a prime number.