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131979035 = 51912710939
BaseRepresentation
bin1111101110111…
…01011100011011
3100012100020012102
413313131130123
5232241312120
621032434015
73161542346
oct767353433
9305306172
10131979035
1168553891
123824890b
132145c506
141375745d
15b8bed75
hex7ddd71b

131979035 has 16 divisors (see below), whose sum is σ = 168038400. Its totient is φ = 99229536.

The previous prime is 131979019. The next prime is 131979049. The reversal of 131979035 is 530979131.

It is a cyclic number.

It is not a de Polignac number, because 131979035 - 24 = 131979019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131979035.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6596 + ... + 17534.

It is an arithmetic number, because the mean of its divisors is an integer number (10502400).

Almost surely, 2131979035 is an apocalyptic number.

131979035 is a deficient number, since it is larger than the sum of its proper divisors (36059365).

131979035 is a wasteful number, since it uses less digits than its factorization.

131979035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11090.

The product of its (nonzero) digits is 25515, while the sum is 38.

The square root of 131979035 is about 11488.2128723314. The cubic root of 131979035 is about 509.1373794015.

The spelling of 131979035 in words is "one hundred thirty-one million, nine hundred seventy-nine thousand, thirty-five".

Divisors: 1 5 19 95 127 635 2413 10939 12065 54695 207841 1039205 1389253 6946265 26395807 131979035