312011313203220 has 48 divisors (see below), whose sum is σ = 873819031747200. Its totient is φ = 83185173542016.

The previous prime is 312011313203207. The next prime is 312011313203243. The reversal of 312011313203220 is 22302313110213.

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, 557321395 + ... + 557880954.

It is an arithmetic number, because the mean of its divisors is an integer number (18204563161400).

Almost surely, 2^{312011313203220} is an apocalyptic number.

312011313203220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312011313203220 is an abundant number, since it is smaller than the sum of its proper divisors (561807718543980).

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

312011313203220 is a wasteful number, since it uses less digits than its factorization.

312011313203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115207024 (or 1115207022 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 312011313203220 its reverse (22302313110213), we get a palindrome (334313626313433).

The spelling of 312011313203220 in words is "three hundred twelve trillion, eleven billion, three hundred thirteen million, two hundred three thousand, two hundred twenty".