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315055131 = 31913142193
BaseRepresentation
bin10010110001110…
…101110000011011
3210221211110101120
4102301311300123
51121123231011
651132420323
710543632036
oct2261656033
9727743346
10315055131
11151927646
12896176a3
135036c571
142dbb201d
151c9d4a06
hex12c75c1b

315055131 has 16 divisors (see below), whose sum is σ = 445568640. Its totient is φ = 197458560.

The previous prime is 315055063. The next prime is 315055141. The reversal of 315055131 is 131550513.

It is not a de Polignac number, because 315055131 - 27 = 315055003 is a prime.

It is a super-2 number, since 2×3150551312 = 198519471138854322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (315055141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13630 + ... + 28563.

It is an arithmetic number, because the mean of its divisors is an integer number (27848040).

Almost surely, 2315055131 is an apocalyptic number.

315055131 is a deficient number, since it is larger than the sum of its proper divisors (130513509).

315055131 is a wasteful number, since it uses less digits than its factorization.

315055131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42346.

The product of its (nonzero) digits is 1125, while the sum is 24.

The square root of 315055131 is about 17749.7924213214. The cubic root of 315055131 is about 680.4489041372.

The spelling of 315055131 in words is "three hundred fifteen million, fifty-five thousand, one hundred thirty-one".

Divisors: 1 3 19 57 131 393 2489 7467 42193 126579 801667 2405001 5527283 16581849 105018377 315055131