311345112012 has 24 divisors (see below), whose sum is σ = 792514830912. Its totient is φ = 94347003600.

The previous prime is 311345112011. The next prime is 311345112019. The reversal of 311345112012 is 210211543113.

It is not an unprimeable number, because it can be changed into a prime (311345112011) 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, 1179337414 + ... + 1179337677.

It is an arithmetic number, because the mean of its divisors is an integer number (33021451288).

Almost surely, 2^311345112012 is an apocalyptic number.

It is an amenable number.

311345112012 is an abundant number, since it is smaller than the sum of its proper divisors (481169718900).

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

311345112012 is a wasteful number, since it uses less digits than its factorization.

311345112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358675109 (or 2358675107 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 311345112012 its reverse (210211543113), we get a palindrome (521556655125).

The spelling of 311345112012 in words is "three hundred eleven billion, three hundred forty-five million, one hundred twelve thousand, twelve".