311111332112 has 80 divisors (see below), whose sum is σ = 698958835200. Its totient is φ = 131391037440.

The previous prime is 311111332087. The next prime is 311111332117. The reversal of 311111332112 is 211233111113.

It is not an unprimeable number, because it can be changed into a prime (311111332117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4576064 + ... + 4643552.

It is an arithmetic number, because the mean of its divisors is an integer number (8736985440).

Almost surely, 2^311111332112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311111332112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349479417600).

311111332112 is an abundant number, since it is smaller than the sum of its proper divisors (387847503088).

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

311111332112 is a wasteful number, since it uses less digits than its factorization.

311111332112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68104 (or 68098 counting only the distinct ones).

The product of its digits is 108, while the sum is 20.

Adding to 311111332112 its reverse (211233111113), we get a palindrome (522344443225).

The spelling of 311111332112 in words is "three hundred eleven billion, one hundred eleven million, three hundred thirty-two thousand, one hundred twelve".