312891343428 has 48 divisors (see below), whose sum is σ = 734888306880. Its totient is φ = 103611345024.

The previous prime is 312891343423. The next prime is 312891343447. The reversal of 312891343428 is 824343198213.

It is not an unprimeable number, because it can be changed into a prime (312891343423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2104026 + ... + 2247822.

It is an arithmetic number, because the mean of its divisors is an integer number (15310173060).

Almost surely, 2^312891343428 is an apocalyptic number.

It is an amenable number.

312891343428 is an abundant number, since it is smaller than the sum of its proper divisors (421996963452).

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

312891343428 is a wasteful number, since it uses less digits than its factorization.

312891343428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144996 (or 144994 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The spelling of 312891343428 in words is "three hundred twelve billion, eight hundred ninety-one million, three hundred forty-three thousand, four hundred twenty-eight".