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131032470 = 2354367749
BaseRepresentation
bin1111100111101…
…10010110010110
3100010120010202110
413303312112112
5232021014340
621000251450
73150520602
oct763662626
9303503673
10131032470
1167a676a8
1237a70b86
13211ba70a
141358c502
15b784680
hex7cf6596

131032470 has 16 divisors (see below), whose sum is σ = 314478000. Its totient is φ = 34941984.

The previous prime is 131032457. The next prime is 131032471. The reversal of 131032470 is 74230131.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131032471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2183845 + ... + 2183904.

It is an arithmetic number, because the mean of its divisors is an integer number (19654875).

Almost surely, 2131032470 is an apocalyptic number.

131032470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131032470 is an abundant number, since it is smaller than the sum of its proper divisors (183445530).

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

131032470 is a wasteful number, since it uses less digits than its factorization.

131032470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4367759.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 131032470 is about 11446.9415129108. The cubic root of 131032470 is about 507.9172654442.

The spelling of 131032470 in words is "one hundred thirty-one million, thirty-two thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 4367749 8735498 13103247 21838745 26206494 43677490 65516235 131032470