85885031 has 4 divisors (see below), whose sum is σ = 86219472. Its totient is φ = 85550592.

The previous prime is 85885001. The next prime is 85885091. The reversal of 85885031 is 13058858.

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 85885031 - 2¹⁴ = 85868647 is a prime.

It is a super-2 number, since 2×85885031² = 14752477099741922, 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 (85885001) 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, 166835 + ... + 167348.

It is an arithmetic number, because the mean of its divisors is an integer number (21554868).

Almost surely, 2^85885031 is an apocalyptic number.

85885031 is a deficient number, since it is larger than the sum of its proper divisors (334441).

85885031 is a wasteful number, since it uses less digits than its factorization.

85885031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334440.

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 85885031 is about 9267.4177093730. The cubic root of 85885031 is about 441.2037132817.

The spelling of 85885031 in words is "eighty-five million, eight hundred eighty-five thousand, thirty-one".