311311121112 has 48 divisors (see below), whose sum is σ = 887509779000. Its totient is φ = 98308774656.

The previous prime is 311311121089. The next prime is 311311121153. The reversal of 311311121112 is 211121113113.

It is a super-2 number, since 2×311311121112² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113781937 + ... + 113784672.

Almost surely, 2^311311121112 is an apocalyptic number.

It is an amenable number.

311311121112 is an abundant number, since it is smaller than the sum of its proper divisors (576198657888).

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

311311121112 is a wasteful number, since it uses less digits than its factorization.

311311121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227566640 (or 227566633 counting only the distinct ones).

The product of its digits is 36, while the sum is 18.

Adding to 311311121112 its reverse (211121113113), we get a palindrome (522432234225).

The spelling of 311311121112 in words is "three hundred eleven billion, three hundred eleven million, one hundred twenty-one thousand, one hundred twelve".