85930731 has 12 divisors (see below), whose sum is σ = 124422480. Its totient is φ = 57148560.

The previous prime is 85930721. The next prime is 85930739. The reversal of 85930731 is 13703958.

It is not a de Polignac number, because 85930731 - 2¹⁵ = 85897963 is a prime.

It is a super-2 number, since 2×85930731² = 14768181060388722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (85930739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7551 + ... + 15128.

It is an arithmetic number, because the mean of its divisors is an integer number (10368540).

Almost surely, 2^85930731 is an apocalyptic number.

85930731 is a deficient number, since it is larger than the sum of its proper divisors (38491749).

85930731 is a wasteful number, since it uses less digits than its factorization.

85930731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23106 (or 23103 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 85930731 is about 9269.8830089705. The cubic root of 85930731 is about 441.2819552223.

The spelling of 85930731 in words is "eighty-five million, nine hundred thirty thousand, seven hundred thirty-one".