312013023112 has 64 divisors (see below), whose sum is σ = 684449942400. Its totient is φ = 130581296640.

The previous prime is 312013023089. The next prime is 312013023137. The reversal of 312013023112 is 211320310213.

It is a self number, because there is not a number n which added to its sum of digits gives 312013023112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146268 + ... + 803380.

It is an arithmetic number, because the mean of its divisors is an integer number (10694530350).

Almost surely, 2^312013023112 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 312013023112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342224971200).

312013023112 is an abundant number, since it is smaller than the sum of its proper divisors (372436919288).

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

312013023112 is a wasteful number, since it uses less digits than its factorization.

312013023112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657326 (or 657322 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 312013023112 its reverse (211320310213), we get a palindrome (523333333325).

The spelling of 312013023112 in words is "three hundred twelve billion, thirteen million, twenty-three thousand, one hundred twelve".