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131045886 = 23220633529
BaseRepresentation
bin1111100111110…
…01100111111110
3100010120211011100
413303321213332
5232021432021
621000433530
73150604656
oct763714776
9303524140
10131045886
1167a76794
1237a788a6
13211c385a
1413593366
15b788626
hex7cf99fe

131045886 has 24 divisors (see below), whose sum is σ = 284150880. Its totient is φ = 43648416.

The previous prime is 131045857. The next prime is 131045899. The reversal of 131045886 is 688540131.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131045886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35370 + ... + 38898.

It is an arithmetic number, because the mean of its divisors is an integer number (11839620).

Almost surely, 2131045886 is an apocalyptic number.

131045886 is an abundant number, since it is smaller than the sum of its proper divisors (153104994).

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

131045886 is a wasteful number, since it uses less digits than its factorization.

131045886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600 (or 5597 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 131045886 is about 11447.5275059726. The cubic root of 131045886 is about 507.9345995332.

The spelling of 131045886 in words is "one hundred thirty-one million, forty-five thousand, eight hundred eighty-six".

Divisors: 1 2 3 6 9 18 2063 3529 4126 6189 7058 10587 12378 18567 21174 31761 37134 63522 7280327 14560654 21840981 43681962 65522943 131045886