Q: Is 631,520 a Prime Number?
A: No, 631,520 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 631520 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 80 160 3,947 7,894 15,788 19,735 31,576 39,470 63,152 78,940 126,304 157,880 315,760 and 631,520, with no remainder.
Since 631,520 cannot be divided by just 1 and 631,520, it is not a prime number.