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131274912 = 2531367447
BaseRepresentation
bin1111101001100…
…01100010100000
3100011000110022210
413310301202200
5232101244122
621005402120
73152550456
oct764614240
9304013283
10131274912
116811286a
1237b69340
1321273b82
14136129d6
15b7d140c
hex7d318a0

131274912 has 24 divisors (see below), whose sum is σ = 344596896. Its totient is φ = 43758272.

The previous prime is 131274893. The next prime is 131274917. The reversal of 131274912 is 219472131.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 131274912.

It is not an unprimeable number, because it can be changed into a prime (131274917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683628 + ... + 683819.

It is an arithmetic number, because the mean of its divisors is an integer number (14358204).

Almost surely, 2131274912 is an apocalyptic number.

131274912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131274912 is an abundant number, since it is smaller than the sum of its proper divisors (213321984).

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

131274912 is a wasteful number, since it uses less digits than its factorization.

131274912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367460 (or 1367452 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 131274912 is about 11457.5264346193. The cubic root of 131274912 is about 508.2303293461.

The spelling of 131274912 in words is "one hundred thirty-one million, two hundred seventy-four thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 1367447 2734894 4102341 5469788 8204682 10939576 16409364 21879152 32818728 43758304 65637456 131274912