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131489304 = 23310751203
BaseRepresentation
bin1111101011001…
…01111000011000
3100011102100102020
413311211320120
5232130124204
621014134440
73154432512
oct765457030
9304370366
10131489304
1168249951
1238051420
132131a62b
141366abb2
15b824bd9
hex7d65e18

131489304 has 32 divisors (see below), whose sum is σ = 331801920. Its totient is φ = 43419296.

The previous prime is 131489299. The next prime is 131489311. The reversal of 131489304 is 403984131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23034 + ... + 28169.

It is an arithmetic number, because the mean of its divisors is an integer number (10368810).

Almost surely, 2131489304 is an apocalyptic number.

It is an amenable number.

131489304 is an abundant number, since it is smaller than the sum of its proper divisors (200312616).

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

131489304 is a wasteful number, since it uses less digits than its factorization.

131489304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51319 (or 51315 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 131489304 is about 11466.8785639336. The cubic root of 131489304 is about 508.5068514743.

The spelling of 131489304 in words is "one hundred thirty-one million, four hundred eighty-nine thousand, three hundred four".

Divisors: 1 2 3 4 6 8 12 24 107 214 321 428 642 856 1284 2568 51203 102406 153609 204812 307218 409624 614436 1228872 5478721 10957442 16436163 21914884 32872326 43829768 65744652 131489304