31320323304 has 32 divisors (see below), whose sum is σ = 79469481120. Its totient is φ = 10284284736.

The previous prime is 31320323297. The next prime is 31320323317. The reversal of 31320323304 is 40332302313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9737299 + ... + 9740514.

It is an arithmetic number, because the mean of its divisors is an integer number (2483421285).

Almost surely, 2^31320323304 is an apocalyptic number.

It is an amenable number.

31320323304 is an abundant number, since it is smaller than the sum of its proper divisors (48149157816).

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

31320323304 is a wasteful number, since it uses less digits than its factorization.

31320323304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19477889 (or 19477885 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 31320323304 its reverse (40332302313), we get a palindrome (71652625617).

The spelling of 31320323304 in words is "thirty-one billion, three hundred twenty million, three hundred twenty-three thousand, three hundred four".