Q: Is 31,617,920 a Composite Number?

Why is 31,617,920 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 31,617,920 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 127 128 160 254 320 389 508 635 640 778 1,016 1,270 1,556 1,945 2,032 2,540 3,112 3,890 4,064 5,080 6,224 7,780 8,128 10,160 12,448 15,560 16,256 20,320 24,896 31,120 40,640 49,403 49,792 62,240 81,280 98,806 124,480 197,612 247,015 248,960 395,224 494,030 790,448 988,060 1,580,896 1,976,120 3,161,792 3,952,240 6,323,584 7,904,480 15,808,960 and 31,617,920, with no remainder.

Since 31,617,920 cannot be divided by just 1 and 31,617,920, it is a composite number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).