85560031 has 16 divisors (see below), whose sum is σ = 94141440. Its totient is φ = 77408640.

The previous prime is 85560019. The next prime is 85560043. The reversal of 85560031 is 13006558.

It is an interprime number because it is at equal distance from previous prime (85560019) and next prime (85560043).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85560031 is a prime.

It is a super-2 number, since 2×85560031² = 14641037809441922, 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 (85560001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93880 + ... + 94786.

It is an arithmetic number, because the mean of its divisors is an integer number (5883840).

Almost surely, 2^85560031 is an apocalyptic number.

85560031 is a deficient number, since it is larger than the sum of its proper divisors (8581409).

85560031 is a wasteful number, since it uses less digits than its factorization.

85560031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 85560031 is about 9249.8665395777. The cubic root of 85560031 is about 440.6464859566.

Adding to 85560031 its reverse (13006558), we get a palindrome (98566589).

The spelling of 85560031 in words is "eighty-five million, five hundred sixty thousand, thirty-one".