The number 2,343,600 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 25 27 28 30 31 35 36 40 42 45 48 50 54 56 60 62 63 70 72 75 80 84 90 93 100 105 108 112 120 124 126 135 140 144 150 155 168 175 180 186 189 200 210 216 217 225 240 248 252 270 279 280 300 310 315 336 350 360 372 378 400 420 432 434 450 465 496 504 525 540 558 560 600 620 630 651 675 700 720 744 756 775 837 840 868 900 930 945 1,008 1,050 1,080 1,085 1,116 1,200 1,240 1,260 1,302 1,350 1,395 1,400 1,488 1,512 1,550 1,575 1,674 1,680 1,736 1,800 1,860 1,890 1,953 2,100 2,160 2,170 2,232 2,325 2,480 2,520 2,604 2,700 2,790 2,800 3,024 3,100 3,150 3,255 3,348 3,472 3,600 3,720 3,780 3,906 4,185 4,200 4,340 4,464 4,650 4,725 5,040 5,208 5,400 5,425 5,580 5,859 6,200 6,300 6,510 6,696 6,975 7,440 7,560 7,812 8,370 8,400 8,680 9,300 9,450 9,765 10,416 10,800 10,850 11,160 11,718 12,400 12,600 13,020 13,392 13,950 15,120 15,624 16,275 16,740 17,360 18,600 18,900 19,530 20,925 21,700 22,320 23,436 25,200 26,040 27,900 29,295 31,248 32,550 33,480 37,200 37,800 39,060 41,850 43,400 46,872 48,825 52,080 55,800 58,590 65,100 66,960 75,600 78,120 83,700 86,800 93,744 97,650 111,600 117,180 130,200 146,475 156,240 167,400 195,300 234,360 260,400 292,950 334,800 390,600 468,720 585,900 781,200 1,171,800 and 2,343,600, with no remainder.
Since 2,343,600 cannot be divided by just 1 and 2,343,600, it is a composite number.