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318965944 = 231131116923
BaseRepresentation
bin10011000000110…
…000100010111000
3211020012011000111
4103000300202320
51123123402234
651352314104
710622110603
oct2300604270
9736164014
10318965944
11154058920
128a9a2934
135110b65b
143050d33a
151d008664
hex130308b8

318965944 has 32 divisors (see below), whose sum is σ = 673482240. Its totient is φ = 140306400.

The previous prime is 318965921. The next prime is 318965963. The reversal of 318965944 is 449569813.

It is a happy number.

It is a super-2 number, since 2×3189659442 = 203478546863622272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55734 + ... + 61189.

It is an arithmetic number, because the mean of its divisors is an integer number (21046320).

Almost surely, 2318965944 is an apocalyptic number.

It is an amenable number.

318965944 is an abundant number, since it is smaller than the sum of its proper divisors (354516296).

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

318965944 is a wasteful number, since it uses less digits than its factorization.

318965944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116971 (or 116967 counting only the distinct ones).

The product of its digits is 933120, while the sum is 49.

The square root of 318965944 is about 17859.6176890772. The cubic root of 318965944 is about 683.2528291174.

The spelling of 318965944 in words is "three hundred eighteen million, nine hundred sixty-five thousand, nine hundred forty-four".

Divisors: 1 2 4 8 11 22 31 44 62 88 124 248 341 682 1364 2728 116923 233846 467692 935384 1286153 2572306 3624613 5144612 7249226 10289224 14498452 28996904 39870743 79741486 159482972 318965944