A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1363230 can be evenly divided by 1 2 3 5 6 9 10 11 15 17 18 22 27 30 33 34 45 51 54 55 66 81 85 90 99 102 110 135 153 162 165 170 187 198 243 255 270 297 306 330 374 405 459 486 495 510 561 594 729 765 810 891 918 935 990 1,122 1,215 1,377 1,458 1,485 1,530 1,683 1,782 1,870 2,295 2,430 2,673 2,754 2,805 2,970 3,366 3,645 4,131 4,455 4,590 5,049 5,346 5,610 6,885 7,290 8,019 8,262 8,415 8,910 10,098 12,393 13,365 13,770 15,147 16,038 16,830 20,655 24,786 25,245 26,730 30,294 40,095 41,310 45,441 50,490 61,965 75,735 80,190 90,882 123,930 136,323 151,470 227,205 272,646 454,410 681,615 and 1,363,230, with no remainder.
Since 1,363,230 cannot be divided by just 1 and 1,363,230, it is not a prime number.