What is the next number 3469131824
The next number is 31. Basically the number for which you add to the pattern changes by 1. Increases by 1. 3 + 1 = 4 4 + 2 = 6 6 + 3 = 99 + 4 = 13 13 + 5 = 18 18 + 6 = 24 24 + 7 = 31.