313020111220 has 48 divisors (see below), whose sum is σ = 660443631120. Its totient is φ = 124618604544.

The previous prime is 313020111197. The next prime is 313020111227. The reversal of 313020111220 is 22111020313.

It can be written as a sum of positive squares in 8 ways, for example, as 67406698384 + 245613412836 = 259628^2 + 495594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 313020111194 and 313020111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313020111227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3848736 + ... + 3929224.

It is an arithmetic number, because the mean of its divisors is an integer number (13759242315).

Almost surely, 2^313020111220 is an apocalyptic number.

It is an amenable number.

313020111220 is an abundant number, since it is smaller than the sum of its proper divisors (347423519900).

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

313020111220 is a wasteful number, since it uses less digits than its factorization.

313020111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81412 (or 81410 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 313020111220 its reverse (22111020313), we get a palindrome (335131131533).

The spelling of 313020111220 in words is "three hundred thirteen billion, twenty million, one hundred eleven thousand, two hundred twenty".