312011323113 has 16 divisors (see below), whose sum is σ = 477418637696. Its totient is φ = 177552380160.

The previous prime is 312011323087. The next prime is 312011323139. The reversal of 312011323113 is 311323110213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (312011323087) and next prime (312011323139).

It is not a de Polignac number, because 312011323113 - 2¹⁶ = 312011257577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 312011323113.

It is not an unprimeable number, because it can be changed into a prime (312011323213) 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, 30820006 + ... + 30830127.

It is an arithmetic number, because the mean of its divisors is an integer number (29838664856).

Almost surely, 2^312011323113 is an apocalyptic number.

It is an amenable number.

312011323113 is a deficient number, since it is larger than the sum of its proper divisors (165407314583).

312011323113 is a wasteful number, since it uses less digits than its factorization.

312011323113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61650384.

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

Adding to 312011323113 its reverse (311323110213), we get a palindrome (623334433326).

The spelling of 312011323113 in words is "three hundred twelve billion, eleven million, three hundred twenty-three thousand, one hundred thirteen".