A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3352230 can be evenly divided by 1 2 3 5 6 7 9 10 14 15 17 18 21 30 34 35 42 45 51 63 70 85 90 102 105 119 126 153 170 210 238 255 306 313 315 357 510 595 626 630 714 765 939 1,071 1,190 1,530 1,565 1,785 1,878 2,142 2,191 2,817 3,130 3,570 4,382 4,695 5,321 5,355 5,634 6,573 9,390 10,642 10,710 10,955 13,146 14,085 15,963 19,719 21,910 26,605 28,170 31,926 32,865 37,247 39,438 47,889 53,210 65,730 74,494 79,815 95,778 98,595 111,741 159,630 186,235 197,190 223,482 239,445 335,223 372,470 478,890 558,705 670,446 1,117,410 1,676,115 and 3,352,230, with no remainder.
Since 3,352,230 cannot be divided by just 1 and 3,352,230, it is not a prime number.