311303223212112 has 80 divisors (see below), whose sum is σ = 893557671228160. Its totient is φ = 103767494515200.

The previous prime is 311303223212021. The next prime is 311303223212237. The reversal of 311303223212112 is 211212322303113.

311303223212112 is a `hidden beast` number, since 3 + 1 + 1 + 3 + 0 + 322 + 321 + 2 + 1 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 321456312 + ... + 322423272.

It is an arithmetic number, because the mean of its divisors is an integer number (11169470890352).

Almost surely, 2^{311303223212112} is an apocalyptic number.

It is an amenable number.

311303223212112 is an abundant number, since it is smaller than the sum of its proper divisors (582254448016048).

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

311303223212112 is a wasteful number, since it uses less digits than its factorization.

311303223212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712209 (or 1712197 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 311303223212112 its reverse (211212322303113), we get a palindrome (522515545515225).

The spelling of 311303223212112 in words is "three hundred eleven trillion, three hundred three billion, two hundred twenty-three million, two hundred twelve thousand, one hundred twelve".