Q: Is 231,640 a Prime Number?
A: No, 231,640 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 231640 can be evenly divided by 1 2 4 5 8 10 20 40 5,791 11,582 23,164 28,955 46,328 57,910 115,820 and 231,640, with no remainder.
Since 231,640 cannot be divided by just 1 and 231,640, it is not a prime number.