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131063841 = 32113128873
BaseRepresentation
bin1111100111111…
…10000000100001
3100010121201210100
413303332000201
5232023020331
621001053013
73151011216
oct763760041
9303551710
10131063841
1167a89227
1237a87169
13211cba8c
1413599b0d
15b78dae6
hex7cfe021

131063841 has 12 divisors (see below), whose sum is σ = 190991268. Its totient is φ = 86601984.

The previous prime is 131063833. The next prime is 131063851. The reversal of 131063841 is 148360131.

131063841 is a `hidden beast` number, since 13 + 10 + 638 + 4 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 40908816 + 90155025 = 6396^2 + 9495^2 .

It is not a de Polignac number, because 131063841 - 23 = 131063833 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131063831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63420 + ... + 65453.

It is an arithmetic number, because the mean of its divisors is an integer number (15915939).

Almost surely, 2131063841 is an apocalyptic number.

It is an amenable number.

131063841 is a deficient number, since it is larger than the sum of its proper divisors (59927427).

131063841 is a wasteful number, since it uses less digits than its factorization.

131063841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128992 (or 128989 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 131063841 is about 11448.3117095928. The cubic root of 131063841 is about 507.9577963678.

The spelling of 131063841 in words is "one hundred thirty-one million, sixty-three thousand, eight hundred forty-one".

Divisors: 1 3 9 113 339 1017 128873 386619 1159857 14562649 43687947 131063841