85056931 has 2 divisors, whose sum is σ = 85056932. Its totient is φ = 85056930.

The previous prime is 85056929. The next prime is 85056943. The reversal of 85056931 is 13965058.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85056931 - 2¹ = 85056929 is a prime.

It is a super-2 number, since 2×85056931² = 14469363022277522, which contains 22 as substring.

Together with 85056929, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (85056911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42528465 + 42528466.

It is an arithmetic number, because the mean of its divisors is an integer number (42528466).

Almost surely, 2^85056931 is an apocalyptic number.

85056931 is a deficient number, since it is larger than the sum of its proper divisors (1).

85056931 is an equidigital number, since it uses as much as digits as its factorization.

85056931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 85056931 is about 9222.6314574529. The cubic root of 85056931 is about 439.7811084102.

The spelling of 85056931 in words is "eighty-five million, fifty-six thousand, nine hundred thirty-one".