312032220320 has 48 divisors (see below), whose sum is σ = 737254836360. Its totient is φ = 124799560704.

The previous prime is 312032220281. The next prime is 312032220337. The reversal of 312032220320 is 23022230213.

It can be written as a sum of positive squares in 4 ways, for example, as 284639322256 + 27392898064 = 533516^2 + 165508^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 312032220292 and 312032220301.

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, 1473434 + ... + 1671846.

Almost surely, 2^312032220320 is an apocalyptic number.

It is an amenable number.

312032220320 is an abundant number, since it is smaller than the sum of its proper divisors (425222616040).

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

312032220320 is a wasteful number, since it uses less digits than its factorization.

312032220320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208257 (or 208249 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 312032220320 its reverse (23022230213), we get a palindrome (335054450533).

The spelling of 312032220320 in words is "three hundred twelve billion, thirty-two million, two hundred twenty thousand, three hundred twenty".