85878031 has 8 divisors (see below), whose sum is σ = 86486400. Its totient is φ = 85272408.

The previous prime is 85877951. The next prime is 85878041. The reversal of 85878031 is 13087858.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85878031 - 2²⁵ = 52323599 is a prime.

It is a super-2 number, since 2×85878031² = 14750072416873922, 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 (85878041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143070 + ... + 143668.

It is an arithmetic number, because the mean of its divisors is an integer number (10810800).

Almost surely, 2^85878031 is an apocalyptic number.

85878031 is a deficient number, since it is larger than the sum of its proper divisors (608369).

85878031 is a wasteful number, since it uses less digits than its factorization.

85878031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 85878031 is about 9267.0400344447. The cubic root of 85878031 is about 441.1917262883.

The spelling of 85878031 in words is "eighty-five million, eight hundred seventy-eight thousand, thirty-one".