31304122510020 has 48 divisors (see below), whose sum is σ = 87656816193408. Its totient is φ = 8347263796480.

The previous prime is 31304122510007. The next prime is 31304122510039. The reversal of 31304122510020 is 2001522140313.

It is a super-2 number, since 2×31304122510020² (a number of 28 digits) contains 22 as substring.

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, 14687769 + ... + 16683488.

It is an arithmetic number, because the mean of its divisors is an integer number (1826183670696).

Almost surely, 2^{31304122510020} is an apocalyptic number.

31304122510020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31304122510020 is an abundant number, since it is smaller than the sum of its proper divisors (56352693683388).

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

31304122510020 is a wasteful number, since it uses less digits than its factorization.

31304122510020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31387900 (or 31387898 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 31304122510020 its reverse (2001522140313), we get a palindrome (33305644650333).

The spelling of 31304122510020 in words is "thirty-one trillion, three hundred four billion, one hundred twenty-two million, five hundred ten thousand, twenty".