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316130868 = 22328781413
BaseRepresentation
bin10010110101111…
…100011000110100
3211000212010000200
4102311330120310
51121412141433
651211440500
710556032224
oct2265743064
9730763020
10316130868
111524a1889
1289a56130
13506580b1
142ddb2084
151cb48613
hex12d7c634

316130868 has 18 divisors (see below), whose sum is σ = 799108674. Its totient is φ = 105376944.

The previous prime is 316130851. The next prime is 316130887. The reversal of 316130868 is 868031613.

316130868 is a `hidden beast` number, since 31 + 613 + 0 + 8 + 6 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 278823204 + 37307664 = 16698^2 + 6108^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 8781413 = 316130868 / (3 + 1 + 6 + 1 + 3 + 0 + 8 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4390671 + ... + 4390742.

Almost surely, 2316130868 is an apocalyptic number.

It is an amenable number.

316130868 is an abundant number, since it is smaller than the sum of its proper divisors (482977806).

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

316130868 is a wasteful number, since it uses less digits than its factorization.

316130868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8781423 (or 8781418 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 316130868 is about 17780.0694036891. The cubic root of 316130868 is about 681.2224751329. Note that the first 3 decimals are identical.

The spelling of 316130868 in words is "three hundred sixteen million, one hundred thirty thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 8781413 17562826 26344239 35125652 52688478 79032717 105376956 158065434 316130868