313122311220 has 48 divisors (see below), whose sum is σ = 876966164928. Its totient is φ = 83477978880.

The previous prime is 313122311219. The next prime is 313122311267. The reversal of 313122311220 is 22113221313.

It is a congruent number.

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, 427929 + ... + 899648.

It is an arithmetic number, because the mean of its divisors is an integer number (18270128436).

Almost surely, 2^313122311220 is an apocalyptic number.

313122311220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

313122311220 is an abundant number, since it is smaller than the sum of its proper divisors (563843853708).

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

313122311220 is a wasteful number, since it uses less digits than its factorization.

313122311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331520 (or 1331518 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 313122311220 its reverse (22113221313), we get a palindrome (335235532533).

The spelling of 313122311220 in words is "three hundred thirteen billion, one hundred twenty-two million, three hundred eleven thousand, two hundred twenty".