85933031 has 4 divisors (see below), whose sum is σ = 86016000. Its totient is φ = 85850064.

The previous prime is 85933027. The next prime is 85933033. The reversal of 85933031 is 13033958.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85933031 - 2² = 85933027 is a prime.

It is a super-2 number, since 2×85933031² = 14768971633693922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85933033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39911 + ... + 42008.

It is an arithmetic number, because the mean of its divisors is an integer number (21504000).

Almost surely, 2^85933031 is an apocalyptic number.

85933031 is a deficient number, since it is larger than the sum of its proper divisors (82969).

85933031 is a wasteful number, since it uses less digits than its factorization.

85933031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82968.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 85933031 is about 9270.0070658010. The cubic root of 85933031 is about 441.2858922672.

Adding to 85933031 its reverse (13033958), we get a palindrome (98966989).

The spelling of 85933031 in words is "eighty-five million, nine hundred thirty-three thousand, thirty-one".