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131368044 = 22317643961
BaseRepresentation
bin1111101010010…
…00010001101100
3100011012012002010
413311020101230
5232112234134
621011401220
73153416133
oct765102154
9304165063
10131368044
1168176835
1237bb3210
13212a7392
141363891a
15b7edce9
hex7d4846c

131368044 has 24 divisors (see below), whose sum is σ = 324556848. Its totient is φ = 41213440.

The previous prime is 131368031. The next prime is 131368051. The reversal of 131368044 is 440863131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321777 + ... + 322184.

It is an arithmetic number, because the mean of its divisors is an integer number (13523202).

Almost surely, 2131368044 is an apocalyptic number.

It is an amenable number.

131368044 is an abundant number, since it is smaller than the sum of its proper divisors (193188804).

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

131368044 is a wasteful number, since it uses less digits than its factorization.

131368044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643985 (or 643983 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 131368044 is about 11461.5899420630. The cubic root of 131368044 is about 508.3504876650.

The spelling of 131368044 in words is "one hundred thirty-one million, three hundred sixty-eight thousand, forty-four".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 643961 1287922 1931883 2575844 3863766 7727532 10947337 21894674 32842011 43789348 65684022 131368044