311312213112 has 32 divisors (see below), whose sum is σ = 779127465600. Its totient is φ = 103657813344.

The previous prime is 311312213027. The next prime is 311312213117. The reversal of 311312213112 is 211312213113.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311312213117) 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, 7035258 + ... + 7079369.

It is an arithmetic number, because the mean of its divisors is an integer number (24347733300).

Almost surely, 2^311312213112 is an apocalyptic number.

It is an amenable number.

311312213112 is an abundant number, since it is smaller than the sum of its proper divisors (467815252488).

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

311312213112 is a wasteful number, since it uses less digits than its factorization.

311312213112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14115555 (or 14115551 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

Adding to 311312213112 its reverse (211312213113), we get a palindrome (522624426225).

Subtracting from 311312213112 its reverse (211312213113), we obtain a palindrome (99999999999).

The spelling of 311312213112 in words is "three hundred eleven billion, three hundred twelve million, two hundred thirteen thousand, one hundred twelve".