856075131 has 6 divisors (see below), whose sum is σ = 1236552980. Its totient is φ = 570716748.

The previous prime is 856075117. The next prime is 856075141. The reversal of 856075131 is 131570658.

856075131 is a `hidden beast` number, since 85 + 60 + 7 + 513 + 1 = 666.

It is not a de Polignac number, because 856075131 - 2⁶ = 856075067 is a prime.

It is a super-2 number, since 2×856075131² = 1465729259833334322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856075141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47559721 + ... + 47559738.

Almost surely, 2^856075131 is an apocalyptic number.

856075131 is a deficient number, since it is larger than the sum of its proper divisors (380477849).

856075131 is a wasteful number, since it uses less digits than its factorization.

856075131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95119465 (or 95119462 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 856075131 is about 29258.7616108406. The cubic root of 856075131 is about 949.5196578151.

The spelling of 856075131 in words is "eight hundred fifty-six million, seventy-five thousand, one hundred thirty-one".