31130023110 has 64 divisors (see below), whose sum is σ = 79140100032. Its totient is φ = 7809744896.

The previous prime is 31130023109. The next prime is 31130023121. The reversal of 31130023110 is 1132003113.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 31130023110.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1343584 + ... + 1366556.

It is an arithmetic number, because the mean of its divisors is an integer number (1236564063).

Almost surely, 2^31130023110 is an apocalyptic number.

31130023110 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31130023110 is an abundant number, since it is smaller than the sum of its proper divisors (48010076922).

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

31130023110 is a wasteful number, since it uses less digits than its factorization.

31130023110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25657.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 31130023110 its reverse (1132003113), we get a palindrome (32262026223).

The spelling of 31130023110 in words is "thirty-one billion, one hundred thirty million, twenty-three thousand, one hundred ten".