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131475342 = 2397122567
BaseRepresentation
bin1111101011000…
…10011110001110
3100011101122021010
413311202132032
5232124202332
621013550050
73154344015
oct765423616
9304348233
10131475342
116823a409
1238045326
132131417b
1413665a7c
15b8209cc
hex7d6278e

131475342 has 16 divisors (see below), whose sum is σ = 263233152. Its totient is φ = 43778040.

The previous prime is 131475301. The next prime is 131475347. The reversal of 131475342 is 243574131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131475347) 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, 5458 + ... + 17109.

It is an arithmetic number, because the mean of its divisors is an integer number (16452072).

Almost surely, 2131475342 is an apocalyptic number.

131475342 is an abundant number, since it is smaller than the sum of its proper divisors (131757810).

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

131475342 is a wasteful number, since it uses less digits than its factorization.

131475342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23543.

The product of its digits is 10080, while the sum is 30.

The square root of 131475342 is about 11466.2697508824. The cubic root of 131475342 is about 508.4888524844.

The spelling of 131475342 in words is "one hundred thirty-one million, four hundred seventy-five thousand, three hundred forty-two".

Divisors: 1 2 3 6 971 1942 2913 5826 22567 45134 67701 135402 21912557 43825114 65737671 131475342