Q: Is 31,240 a Prime Number?
A: No, 31,240 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 31240 can be evenly divided by 1 2 4 5 8 10 11 20 22 40 44 55 71 88 110 142 220 284 355 440 568 710 781 1,420 1,562 2,840 3,124 3,905 6,248 7,810 15,620 and 31,240, with no remainder.
Since 31,240 cannot be divided by just 1 and 31,240, it is not a prime number.