A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3343032 can be evenly divided by 1 2 3 4 6 7 8 9 11 12 14 18 21 22 24 27 28 33 36 42 44 54 56 63 66 67 72 77 81 84 88 99 108 126 132 134 154 162 168 189 198 201 216 231 252 264 268 297 308 324 378 396 402 462 469 504 536 567 594 603 616 648 693 737 756 792 804 891 924 938 1,134 1,188 1,206 1,386 1,407 1,474 1,512 1,608 1,782 1,809 1,848 1,876 2,079 2,211 2,268 2,376 2,412 2,772 2,814 2,948 3,564 3,618 3,752 4,158 4,221 4,422 4,536 4,824 5,159 5,427 5,544 5,628 5,896 6,237 6,633 7,128 7,236 8,316 8,442 8,844 10,318 10,854 11,256 12,474 12,663 13,266 14,472 15,477 16,632 16,884 17,688 19,899 20,636 21,708 24,948 25,326 26,532 30,954 33,768 37,989 39,798 41,272 43,416 46,431 49,896 50,652 53,064 59,697 61,908 75,978 79,596 92,862 101,304 119,394 123,816 139,293 151,956 159,192 185,724 238,788 278,586 303,912 371,448 417,879 477,576 557,172 835,758 1,114,344 1,671,516 and 3,343,032, with no remainder.
Since 3,343,032 cannot be divided by just 1 and 3,343,032, it is not a prime number.