31204334020 has 48 divisors (see below), whose sum is σ = 71621964288. Its totient is φ = 11368558080.

The previous prime is 31204334017. The next prime is 31204334039. The reversal of 31204334020 is 2043340213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31204333982 and 31204334000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1469742 + ... + 1490821.

It is an arithmetic number, because the mean of its divisors is an integer number (1492124256).

Almost surely, 2^31204334020 is an apocalyptic number.

It is an amenable number.

31204334020 is an abundant number, since it is smaller than the sum of its proper divisors (40417630268).

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

31204334020 is a wasteful number, since it uses less digits than its factorization.

31204334020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2960620 (or 2960618 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 31204334020 its reverse (2043340213), we get a palindrome (33247674233).

The spelling of 31204334020 in words is "thirty-one billion, two hundred four million, three hundred thirty-four thousand, twenty".