31108086 has 24 divisors (see below), whose sum is σ = 67629744. Its totient is φ = 10334160.

The previous prime is 31108069. The next prime is 31108087. The reversal of 31108086 is 68080113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31108087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2820 + ... + 8376.

It is an arithmetic number, because the mean of its divisors is an integer number (2817906).

Almost surely, 2^31108086 is an apocalyptic number.

31108086 is an abundant number, since it is smaller than the sum of its proper divisors (36521658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31108086 is a wasteful number, since it uses less digits than its factorization.

31108086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5876 (or 5873 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 31108086 is about 5577.4623261838. The cubic root of 31108086 is about 314.5027377275.

Adding to 31108086 its reverse (68080113), we get a palindrome (99188199).

The spelling of 31108086 in words is "thirty-one million, one hundred eight thousand, eighty-six".