312450012 has 72 divisors (see below), whose sum is σ = 924679392. Its totient is φ = 87091200.

The previous prime is 312450007. The next prime is 312450029. The reversal of 312450012 is 210054213.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4789 + ... + 25452.

Almost surely, 2^312450012 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 312450012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462339696).

312450012 is an abundant number, since it is smaller than the sum of its proper divisors (612229380).

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

312450012 is a wasteful number, since it uses less digits than its factorization.

312450012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30299 (or 30294 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 312450012 is about 17676.2555989667. The cubic root of 312450012 is about 678.5682186705.

The spelling of 312450012 in words is "three hundred twelve million, four hundred fifty thousand, twelve".