312344103221399 has 4 divisors (see below), whose sum is σ = 313159623073536. Its totient is φ = 311528583369264.

The previous prime is 312344103221387. The next prime is 312344103221407. The reversal of 312344103221399 is 993122301443213.

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

It is a cyclic number.

It is not a de Polignac number, because 312344103221399 - 2⁴⁸ = 30869126510743 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 (312344103221329) 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, 407759925494 + ... + 407759926259.

It is an arithmetic number, because the mean of its divisors is an integer number (78289905768384).

Almost surely, 2^{312344103221399} is an apocalyptic number.

312344103221399 is a deficient number, since it is larger than the sum of its proper divisors (815519852137).

312344103221399 is an equidigital number, since it uses as much as digits as its factorization.

312344103221399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815519852136.

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 312344103221399 in words is "three hundred twelve trillion, three hundred forty-four billion, one hundred three million, two hundred twenty-one thousand, three hundred ninety-nine".