Q: Is 31,251,840 a Composite Number?

Why is 31,251,840 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 31,251,840 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 41 48 60 64 80 82 96 120 123 128 160 164 192 205 240 246 320 328 384 397 410 480 492 615 640 656 794 820 960 984 1,191 1,230 1,312 1,588 1,640 1,920 1,968 1,985 2,382 2,460 2,624 3,176 3,280 3,936 3,970 4,764 4,920 5,248 5,955 6,352 6,560 7,872 7,940 9,528 9,840 11,910 12,704 13,120 15,744 15,880 16,277 19,056 19,680 23,820 25,408 26,240 31,760 32,554 38,112 39,360 47,640 48,831 50,816 63,520 65,108 76,224 78,720 81,385 95,280 97,662 127,040 130,216 152,448 162,770 190,560 195,324 244,155 254,080 260,432 325,540 381,120 390,648 488,310 520,864 651,080 762,240 781,296 976,620 1,041,728 1,302,160 1,562,592 1,953,240 2,083,456 2,604,320 3,125,184 3,906,480 5,208,640 6,250,368 7,812,960 10,417,280 15,625,920 and 31,251,840, with no remainder.

Since 31,251,840 cannot be divided by just 1 and 31,251,840, 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).