311222112113 has 8 divisors (see below), whose sum is σ = 341993244960. Its totient is φ = 280864014880.

The previous prime is 311222112109. The next prime is 311222112121. The reversal of 311222112113 is 311211222113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311222112113 - 2² = 311222112109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311222132113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103257323 + ... + 103260336.

It is an arithmetic number, because the mean of its divisors is an integer number (42749155620).

Almost surely, 2^311222112113 is an apocalyptic number.

It is an amenable number.

311222112113 is a deficient number, since it is larger than the sum of its proper divisors (30771132847).

311222112113 is a wasteful number, since it uses less digits than its factorization.

311222112113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206517807.

The product of its digits is 144, while the sum is 20.

Adding to 311222112113 its reverse (311211222113), we get a palindrome (622433334226).

Subtracting from 311222112113 its reverse (311211222113), we obtain a square (10890000 = 3300²).

The spelling of 311222112113 in words is "three hundred eleven billion, two hundred twenty-two million, one hundred twelve thousand, one hundred thirteen".