Q: Is 31,130,240 a Composite Number?

Why is 31,130,240 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 31,130,240 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 127 128 160 254 320 383 508 635 640 766 1,016 1,270 1,532 1,915 2,032 2,540 3,064 3,830 4,064 5,080 6,128 7,660 8,128 10,160 12,256 15,320 16,256 20,320 24,512 30,640 40,640 48,641 49,024 61,280 81,280 97,282 122,560 194,564 243,205 245,120 389,128 486,410 778,256 972,820 1,556,512 1,945,640 3,113,024 3,891,280 6,226,048 7,782,560 15,565,120 and 31,130,240, with no remainder.

Since 31,130,240 cannot be divided by just 1 and 31,130,240, 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).