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131347488 = 2531368203
BaseRepresentation
bin1111101010000…
…11010000100000
3100011011010212210
413311003100200
5232111104423
621011122120
73153302166
oct765032040
9304133783
10131347488
1168162348
1237ba3340
132129ac0c
1413631236
15b7e7b93
hex7d43420

131347488 has 24 divisors (see below), whose sum is σ = 344787408. Its totient is φ = 43782464.

The previous prime is 131347451. The next prime is 131347493. The reversal of 131347488 is 884743131.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684006 + ... + 684197.

It is an arithmetic number, because the mean of its divisors is an integer number (14366142).

Almost surely, 2131347488 is an apocalyptic number.

It is an amenable number.

131347488 is an abundant number, since it is smaller than the sum of its proper divisors (213439920).

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

131347488 is a wasteful number, since it uses less digits than its factorization.

131347488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368216 (or 1368208 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 131347488 is about 11460.6931727536. The cubic root of 131347488 is about 508.3239713287.

The spelling of 131347488 in words is "one hundred thirty-one million, three hundred forty-seven thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 1368203 2736406 4104609 5472812 8209218 10945624 16418436 21891248 32836872 43782496 65673744 131347488