Q: Is 331,328 a Prime Number?
A: No, 331,328 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 331328 can be evenly divided by 1 2 4 8 16 31 32 62 64 124 167 248 334 496 668 992 1,336 1,984 2,672 5,177 5,344 10,354 10,688 20,708 41,416 82,832 165,664 and 331,328, with no remainder.
Since 331,328 cannot be divided by just 1 and 331,328, it is not a prime number.