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131059992 = 2337780119
BaseRepresentation
bin1111100111111…
…01000100011000
3100010121112111210
413303331010120
5232022404432
621001023120
73150664050
oct763750430
9303545453
10131059992
1167a86348
1237a84aa0
13211ca0bb
1413598560
15b78c8cc
hex7cfd118

131059992 has 32 divisors (see below), whose sum is σ = 374457600. Its totient is φ = 37445664.

The previous prime is 131059991. The next prime is 131060009. The reversal of 131059992 is 299950131.

It is a self number, because there is not a number n which added to its sum of digits gives 131059992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131059991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389892 + ... + 390227.

It is an arithmetic number, because the mean of its divisors is an integer number (11701800).

Almost surely, 2131059992 is an apocalyptic number.

131059992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131059992 is an abundant number, since it is smaller than the sum of its proper divisors (243397608).

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

131059992 is a wasteful number, since it uses less digits than its factorization.

131059992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780135 (or 780131 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 39.

The square root of 131059992 is about 11448.1436049693. The cubic root of 131059992 is about 507.9528238580.

The spelling of 131059992 in words is "one hundred thirty-one million, fifty-nine thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 780119 1560238 2340357 3120476 4680714 5460833 6240952 9361428 10921666 16382499 18722856 21843332 32764998 43686664 65529996 131059992