85600031 has 4 divisors (see below), whose sum is σ = 93381864. Its totient is φ = 77818200.

The previous prime is 85600027. The next prime is 85600051. The reversal of 85600031 is 13000658.

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 85600031 - 2² = 85600027 is a prime.

It is a super-2 number, since 2×85600031² = 14654730614401922, 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 (85600051) 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, 3890900 + ... + 3890921.

It is an arithmetic number, because the mean of its divisors is an integer number (23345466).

Almost surely, 2^85600031 is an apocalyptic number.

85600031 is a deficient number, since it is larger than the sum of its proper divisors (7781833).

85600031 is a wasteful number, since it uses less digits than its factorization.

85600031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7781832.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 85600031 is about 9252.0284802847. The cubic root of 85600031 is about 440.7151438459.

Adding to 85600031 its reverse (13000658), we get a palindrome (98600689).

The spelling of 85600031 in words is "eighty-five million, six hundred thousand, thirty-one".