31110310420 has 48 divisors (see below), whose sum is σ = 79056794880. Its totient is φ = 10038956544.

The previous prime is 31110310391. The next prime is 31110310481. The reversal of 31110310420 is 2401301113.

It is a junction number, because it is equal to n+sod(n) for n = 31110310394 and 31110310403.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6533400 + ... + 6538159.

It is an arithmetic number, because the mean of its divisors is an integer number (1647016560).

Almost surely, 2^31110310420 is an apocalyptic number.

It is an amenable number.

31110310420 is an abundant number, since it is smaller than the sum of its proper divisors (47946484460).

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

31110310420 is a wasteful number, since it uses less digits than its factorization.

31110310420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13071592 (or 13071590 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31110310420 its reverse (2401301113), we get a palindrome (33511611533).

The spelling of 31110310420 in words is "thirty-one billion, one hundred ten million, three hundred ten thousand, four hundred twenty".