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131359857 = 3791314231
BaseRepresentation
bin1111101010001…
…10010001110001
3100011011202211220
413311012101301
5232112003412
621011255253
73153353226
oct765062161
9304152756
10131359857
1168170672
1237baa529
13212a3735
141363594d
15b7eb68c
hex7d46471

131359857 has 16 divisors (see below), whose sum is σ = 178759680. Its totient is φ = 85784400.

The previous prime is 131359849. The next prime is 131359861. The reversal of 131359857 is 758953131.

It is not a de Polignac number, because 131359857 - 23 = 131359849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131359807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28932 + ... + 33162.

It is an arithmetic number, because the mean of its divisors is an integer number (11172480).

Almost surely, 2131359857 is an apocalyptic number.

It is an amenable number.

131359857 is a deficient number, since it is larger than the sum of its proper divisors (47399823).

131359857 is a wasteful number, since it uses less digits than its factorization.

131359857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4444.

The product of its digits is 113400, while the sum is 42.

The square root of 131359857 is about 11461.2327870958. The cubic root of 131359857 is about 508.3399271264.

The spelling of 131359857 in words is "one hundred thirty-one million, three hundred fifty-nine thousand, eight hundred fifty-seven".

Divisors: 1 3 79 131 237 393 4231 10349 12693 31047 334249 554261 1002747 1662783 43786619 131359857