312242400324021 has 16 divisors (see below), whose sum is σ = 443667277430784. Its totient is φ = 194874689561904.

The previous prime is 312242400323989. The next prime is 312242400324077. The reversal of 312242400324021 is 120423004242213.

It is not a de Polignac number, because 312242400324021 - 2⁵ = 312242400323989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312242400324021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312242400325021) 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, 48140977381 + ... + 48140983866.

It is an arithmetic number, because the mean of its divisors is an integer number (27729204839424).

Almost surely, 2^{312242400324021} is an apocalyptic number.

It is an amenable number.

312242400324021 is a deficient number, since it is larger than the sum of its proper divisors (131424877106763).

312242400324021 is a wasteful number, since it uses less digits than its factorization.

312242400324021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96281961320.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 312242400324021 its reverse (120423004242213), we get a palindrome (432665404566234).

The spelling of 312242400324021 in words is "three hundred twelve trillion, two hundred forty-two billion, four hundred million, three hundred twenty-four thousand, twenty-one".