A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2328612 can be evenly divided by 1 2 3 4 6 11 12 13 22 23 26 33 39 44 46 52 59 66 69 78 92 118 132 138 143 156 177 236 253 276 286 299 354 429 506 572 598 649 708 759 767 858 897 1,012 1,196 1,298 1,357 1,518 1,534 1,716 1,794 1,947 2,301 2,596 2,714 3,036 3,068 3,289 3,588 3,894 4,071 4,602 5,428 6,578 7,788 8,142 8,437 9,204 9,867 13,156 14,927 16,284 16,874 17,641 19,734 25,311 29,854 33,748 35,282 39,468 44,781 50,622 52,923 59,708 70,564 89,562 101,244 105,846 179,124 194,051 211,692 388,102 582,153 776,204 1,164,306 and 2,328,612, with no remainder.
Since 2,328,612 cannot be divided by just 1 and 2,328,612, it is not a prime number.