312111320313 has 16 divisors (see below), whose sum is σ = 449777765696. Its totient is φ = 191375110080.

The previous prime is 312111320237. The next prime is 312111320321. The reversal of 312111320313 is 313023111213.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-312111320313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312111320313.

It is not an unprimeable number, because it can be changed into a prime (312111320363) 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 15 ways as a sum of consecutive naturals, for example, 14434783 + ... + 14456388.

It is an arithmetic number, because the mean of its divisors is an integer number (28111110356).

Almost surely, 2^312111320313 is an apocalyptic number.

It is an amenable number.

312111320313 is a deficient number, since it is larger than the sum of its proper divisors (137666445383).

312111320313 is a wasteful number, since it uses less digits than its factorization.

312111320313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28891464.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 312111320313 its reverse (313023111213), we get a palindrome (625134431526).

The spelling of 312111320313 in words is "three hundred twelve billion, one hundred eleven million, three hundred twenty thousand, three hundred thirteen".