313112203220 has 24 divisors (see below), whose sum is σ = 657549451104. Its totient is φ = 125242248096.

The previous prime is 313112203171. The next prime is 313112203247. The reversal of 313112203220 is 22302211313.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 313112203192 and 313112203201.

It is a congruent 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, 1017599 + ... + 1289081.

It is an arithmetic number, because the mean of its divisors is an integer number (27397893796).

Almost surely, 2^313112203220 is an apocalyptic number.

It is an amenable number.

313112203220 is an abundant number, since it is smaller than the sum of its proper divisors (344437247884).

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

313112203220 is a wasteful number, since it uses less digits than its factorization.

313112203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329159 (or 329157 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 313112203220 its reverse (22302211313), we get a palindrome (335414414533).

The spelling of 313112203220 in words is "three hundred thirteen billion, one hundred twelve million, two hundred three thousand, two hundred twenty".