311412311220 has 24 divisors (see below), whose sum is σ = 871954471584. Its totient is φ = 83043282976.

The previous prime is 311412311209. The next prime is 311412311281. The reversal of 311412311220 is 22113214113.

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, 2595102534 + ... + 2595102653.

It is an arithmetic number, because the mean of its divisors is an integer number (36331436316).

Almost surely, 2^311412311220 is an apocalyptic number.

311412311220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311412311220 is an abundant number, since it is smaller than the sum of its proper divisors (560542160364).

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

311412311220 is a wasteful number, since it uses less digits than its factorization.

311412311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190205199 (or 5190205197 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 311412311220 its reverse (22113214113), we get a palindrome (333525525333).

The spelling of 311412311220 in words is "three hundred eleven billion, four hundred twelve million, three hundred eleven thousand, two hundred twenty".