Q: Is 31,440 a Prime Number?
A: No, 31,440 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 31440 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 131 240 262 393 524 655 786 1,048 1,310 1,572 1,965 2,096 2,620 3,144 3,930 5,240 6,288 7,860 10,480 15,720 and 31,440, with no remainder.
Since 31,440 cannot be divided by just 1 and 31,440, it is not a prime number.