312220113320 has 16 divisors (see below), whose sum is σ = 702495255060. Its totient is φ = 124888045312.

The previous prime is 312220113311. The next prime is 312220113343. The reversal of 312220113320 is 23311022213.

It can be written as a sum of positive squares in 2 ways, for example, as 312197092516 + 23020804 = 558746^2 + 4798^2 .

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 = 312220113292 and 312220113301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3902751377 + ... + 3902751456.

Almost surely, 2^312220113320 is an apocalyptic number.

It is an amenable number.

312220113320 is an abundant number, since it is smaller than the sum of its proper divisors (390275141740).

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

312220113320 is a wasteful number, since it uses less digits than its factorization.

312220113320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805502844 (or 7805502840 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 312220113320 its reverse (23311022213), we get a palindrome (335531135533).

The spelling of 312220113320 in words is "three hundred twelve billion, two hundred twenty million, one hundred thirteen thousand, three hundred twenty".