312021314440013 has 4 divisors (see below), whose sum is σ = 312025903529148. Its totient is φ = 312016725350880.

The previous prime is 312021314439997. The next prime is 312021314440067. The reversal of 312021314440013 is 310044413120213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79830704648809 + 232190609791204 = 8934803^2 + 15237802^2 .

It is a cyclic number.

It is not a de Polignac number, because 312021314440013 - 2⁴ = 312021314439997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312021314490013) 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, 2294442578 + ... + 2294578563.

It is an arithmetic number, because the mean of its divisors is an integer number (78006475882287).

Almost surely, 2^{312021314440013} is an apocalyptic number.

It is an amenable number.

312021314440013 is a deficient number, since it is larger than the sum of its proper divisors (4589089135).

312021314440013 is an equidigital number, since it uses as much as digits as its factorization.

312021314440013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589089134.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 312021314440013 its reverse (310044413120213), we get a palindrome (622065727560226).

The spelling of 312021314440013 in words is "three hundred twelve trillion, twenty-one billion, three hundred fourteen million, four hundred forty thousand, thirteen".