312223000012 has 72 divisors (see below), whose sum is σ = 716217078528. Its totient is φ = 116356368480.

The previous prime is 312223000007. The next prime is 312223000021. The reversal of 312223000012 is 210000322213.

It is a self number, because there is not a number n which added to its sum of digits gives 312223000012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1925458 + ... + 2081305.

It is an arithmetic number, because the mean of its divisors is an integer number (9947459424).

Almost surely, 2^312223000012 is an apocalyptic number.

It is an amenable number.

312223000012 is an abundant number, since it is smaller than the sum of its proper divisors (403994078516).

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

312223000012 is a wasteful number, since it uses less digits than its factorization.

312223000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4006819 (or 4006806 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 312223000012 its reverse (210000322213), we get a palindrome (522223322225).

The spelling of 312223000012 in words is "three hundred twelve billion, two hundred twenty-three million, twelve", and thus it is an aban number.