31120122032 has 60 divisors (see below), whose sum is σ = 64372650720. Its totient is φ = 14566679424.

The previous prime is 31120121959. The next prime is 31120122043. The reversal of 31120122032 is 23022102113.

It is a self number, because there is not a number n which added to its sum of digits gives 31120122032.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 358694 + ... + 436922.

It is an arithmetic number, because the mean of its divisors is an integer number (1072877512).

Almost surely, 2^31120122032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31120122032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32186325360).

31120122032 is an abundant number, since it is smaller than the sum of its proper divisors (33252528688).

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

31120122032 is a wasteful number, since it uses less digits than its factorization.

31120122032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78330 (or 78301 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31120122032 its reverse (23022102113), we get a palindrome (54142224145).

The spelling of 31120122032 in words is "thirty-one billion, one hundred twenty million, one hundred twenty-two thousand, thirty-two".