31320113311020 has 24 divisors (see below), whose sum is σ = 87696317271024. Its totient is φ = 8352030216256.

The previous prime is 31320113310883. The next prime is 31320113311099. The reversal of 31320113311020 is 2011331102313.

It is a happy number.

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, 261000944199 + ... + 261000944318.

It is an arithmetic number, because the mean of its divisors is an integer number (3654013219626).

Almost surely, 2^{31320113311020} is an apocalyptic number.

31320113311020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31320113311020 is an abundant number, since it is smaller than the sum of its proper divisors (56376203960004).

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

31320113311020 is a wasteful number, since it uses less digits than its factorization.

31320113311020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522001888529 (or 522001888527 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31320113311020 its reverse (2011331102313), we get a palindrome (33331444413333).

The spelling of 31320113311020 in words is "thirty-one trillion, three hundred twenty billion, one hundred thirteen million, three hundred eleven thousand, twenty".