Q: Is 31,809,540 a Composite Number?

Why is 31,809,540 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 31,809,540 can be evenly divided by 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 53 60 70 84 105 106 140 159 210 212 265 318 371 420 530 636 742 795 1,060 1,113 1,429 1,484 1,590 1,855 2,226 2,858 3,180 3,710 4,287 4,452 5,565 5,716 7,145 7,420 8,574 10,003 11,130 14,290 17,148 20,006 21,435 22,260 28,580 30,009 40,012 42,870 50,015 60,018 75,737 85,740 100,030 120,036 150,045 151,474 200,060 227,211 300,090 302,948 378,685 454,422 530,159 600,180 757,370 908,844 1,060,318 1,136,055 1,514,740 1,590,477 2,120,636 2,272,110 2,650,795 3,180,954 4,544,220 5,301,590 6,361,908 7,952,385 10,603,180 15,904,770 and 31,809,540, with no remainder.

Since 31,809,540 cannot be divided by just 1 and 31,809,540, 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).