312001300320 has 48 divisors (see below), whose sum is σ = 982804097520. Its totient is φ = 83200346624.

The previous prime is 312001300309. The next prime is 312001300337. The reversal of 312001300320 is 23003100213.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×312001300320² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 312001300320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325000875 + ... + 325001834.

It is an arithmetic number, because the mean of its divisors is an integer number (20475085365).

Almost surely, 2^312001300320 is an apocalyptic number.

312001300320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312001300320 is an abundant number, since it is smaller than the sum of its proper divisors (670802797200).

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

312001300320 is a wasteful number, since it uses less digits than its factorization.

312001300320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650002727 (or 650002719 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 312001300320 its reverse (23003100213), we get a palindrome (335004400533).

The spelling of 312001300320 in words is "three hundred twelve billion, one million, three hundred thousand, three hundred twenty".