Q: Is 31,220,784 a Composite Number?

Why is 31,220,784 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 31,220,784 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 36 42 47 48 56 63 72 84 94 112 126 141 144 168 188 252 282 329 336 376 423 504 564 658 659 752 846 987 1,008 1,128 1,316 1,318 1,692 1,974 1,977 2,256 2,632 2,636 2,961 3,384 3,948 3,954 4,613 5,264 5,272 5,922 5,931 6,768 7,896 7,908 9,226 10,544 11,844 11,862 13,839 15,792 15,816 18,452 23,688 23,724 27,678 30,973 31,632 36,904 41,517 47,376 47,448 55,356 61,946 73,808 83,034 92,919 94,896 110,712 123,892 166,068 185,838 216,811 221,424 247,784 278,757 332,136 371,676 433,622 495,568 557,514 650,433 664,272 743,352 867,244 1,115,028 1,300,866 1,486,704 1,734,488 1,951,299 2,230,056 2,601,732 3,468,976 3,902,598 4,460,112 5,203,464 7,805,196 10,406,928 15,610,392 and 31,220,784, with no remainder.

Since 31,220,784 cannot be divided by just 1 and 31,220,784, 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).