3111320013220 has 48 divisors (see below), whose sum is σ = 6597099170928. Its totient is φ = 1232508856320.

The previous prime is 3111320013199. The next prime is 3111320013247. The reversal of 3111320013220 is 223100231113.

3111320013220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 16556483584 + 3094763529636 = 128672^2 + 1759194^2 .

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, 195057 + ... + 2502136.

It is an arithmetic number, because the mean of its divisors is an integer number (137439566061).

Almost surely, 2^{3111320013220} is an apocalyptic number.

It is an amenable number.

3111320013220 is an abundant number, since it is smaller than the sum of its proper divisors (3485779157708).

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

3111320013220 is a wasteful number, since it uses less digits than its factorization.

3111320013220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697760 (or 2697758 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 3111320013220 its reverse (223100231113), we get a palindrome (3334420244333).

The spelling of 3111320013220 in words is "three trillion, one hundred eleven billion, three hundred twenty million, thirteen thousand, two hundred twenty".