Q: Is 31,220,000 a Composite Number?

Why is 31,220,000 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 31,220,000 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 50 56 70 80 100 112 125 140 160 175 200 223 224 250 280 350 400 446 500 560 625 700 800 875 892 1,000 1,115 1,120 1,250 1,400 1,561 1,750 1,784 2,000 2,230 2,500 2,800 3,122 3,500 3,568 4,000 4,375 4,460 5,000 5,575 5,600 6,244 7,000 7,136 7,805 8,750 8,920 10,000 11,150 12,488 14,000 15,610 17,500 17,840 20,000 22,300 24,976 27,875 28,000 31,220 35,000 35,680 39,025 44,600 49,952 55,750 62,440 70,000 78,050 89,200 111,500 124,880 139,375 140,000 156,100 178,400 195,125 223,000 249,760 278,750 312,200 390,250 446,000 557,500 624,400 780,500 892,000 975,625 1,115,000 1,248,800 1,561,000 1,951,250 2,230,000 3,122,000 3,902,500 4,460,000 6,244,000 7,805,000 15,610,000 and 31,220,000, with no remainder.

Since 31,220,000 cannot be divided by just 1 and 31,220,000, 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).