312009807204 has 144 divisors (see below), whose sum is σ = 840210122752. Its totient is φ = 97483792896.

The previous prime is 312009807191. The next prime is 312009807209. The reversal of 312009807204 is 402708900213.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (312009807209) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 4143837 + ... + 4218459.

Almost surely, 2^312009807204 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 312009807204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420105061376).

312009807204 is an abundant number, since it is smaller than the sum of its proper divisors (528200315548).

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

312009807204 is a wasteful number, since it uses less digits than its factorization.

312009807204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74786 (or 74781 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 312009807204 in words is "three hundred twelve billion, nine million, eight hundred seven thousand, two hundred four".