312013223000 has 128 divisors (see below), whose sum is σ = 774628920000. Its totient is φ = 117225216000.

The previous prime is 312013222981. The next prime is 312013223021. The reversal of 312013223000 is 322310213.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 312013223000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8464610 + ... + 8501390.

Almost surely, 2^312013223000 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 312013223000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387314460000).

312013223000 is an abundant number, since it is smaller than the sum of its proper divisors (462615697000).

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

312013223000 is a wasteful number, since it uses less digits than its factorization.

312013223000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37318 (or 37304 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 312013223000 its reverse (322310213), we get a palindrome (312335533213).

The spelling of 312013223000 in words is "three hundred twelve billion, thirteen million, two hundred twenty-three thousand".