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131088917 = 679192129
BaseRepresentation
bin1111101000001…
…00001000010101
3100010200000012002
413310010020111
5232024321132
621001405045
73151144301
oct764041025
9303600162
10131088917
1167aa6053
1237a99785
132120a30b
14135a4d01
15b796262
hex7d04215

131088917 has 8 divisors (see below), whose sum is σ = 133252800. Its totient is φ = 128931264.

The previous prime is 131088911. The next prime is 131088929. The reversal of 131088917 is 719880131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131088917 - 216 = 131023381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131088911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60509 + ... + 62637.

It is an arithmetic number, because the mean of its divisors is an integer number (16656600).

Almost surely, 2131088917 is an apocalyptic number.

It is an amenable number.

131088917 is a deficient number, since it is larger than the sum of its proper divisors (2163883).

131088917 is an equidigital number, since it uses as much as digits as its factorization.

131088917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115.

The product of its (nonzero) digits is 12096, while the sum is 38.

The square root of 131088917 is about 11449.4068405311. The cubic root of 131088917 is about 507.9901895826.

The spelling of 131088917 in words is "one hundred thirty-one million, eighty-eight thousand, nine hundred seventeen".

Divisors: 1 67 919 2129 61573 142643 1956551 131088917