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317949108 = 223179148021
BaseRepresentation
bin10010111100111…
…000010010110100
3211011021111011220
4102330320102310
51122343332413
651314430340
710610344221
oct2274702264
9734244156
10317949108
11153523964
128a5923b0
1350b43889
1430326948
151cda7223
hex12f384b4

317949108 has 24 divisors (see below), whose sum is σ = 746030880. Its totient is φ = 105390240.

The previous prime is 317949101. The next prime is 317949143. The reversal of 317949108 is 801949713.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 317949108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317949101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71863 + ... + 76158.

It is an arithmetic number, because the mean of its divisors is an integer number (31084620).

Almost surely, 2317949108 is an apocalyptic number.

It is an amenable number.

317949108 is an abundant number, since it is smaller than the sum of its proper divisors (428081772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

317949108 is a wasteful number, since it uses less digits than its factorization.

317949108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148207 (or 148205 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 317949108 is about 17831.1275022080. The cubic root of 317949108 is about 682.5260057984.

The spelling of 317949108 in words is "three hundred seventeen million, nine hundred forty-nine thousand, one hundred eight".

Divisors: 1 2 3 4 6 12 179 358 537 716 1074 2148 148021 296042 444063 592084 888126 1776252 26495759 52991518 79487277 105983036 158974554 317949108