312333121013 has 4 divisors (see below), whose sum is σ = 312334583808. Its totient is φ = 312331658220.

The previous prime is 312333121003. The next prime is 312333121147. The reversal of 312333121013 is 310121333213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310121333213 = 38053 ⋅8149721.

It is a cyclic number.

It is not a de Polignac number, because 312333121013 - 2⁴ = 312333120997 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 312333121013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312333121003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342023 + ... + 861188.

It is an arithmetic number, because the mean of its divisors is an integer number (78083645952).

Almost surely, 2^312333121013 is an apocalyptic number.

It is an amenable number.

312333121013 is a deficient number, since it is larger than the sum of its proper divisors (1462795).

312333121013 is a wasteful number, since it uses less digits than its factorization.

312333121013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462794.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 312333121013 its reverse (310121333213), we get a palindrome (622454454226).

The spelling of 312333121013 in words is "three hundred twelve billion, three hundred thirty-three million, one hundred twenty-one thousand, thirteen".