312221343122213 has 8 divisors (see below), whose sum is σ = 357014901707328. Its totient is φ = 267475411929024.

The previous prime is 312221343122167. The next prime is 312221343122251.

312221343122213 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312221343122213 - 2¹⁸ = 312221342860069 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 312221343122213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312221343122413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11906833931 + ... + 11906860152.

It is an arithmetic number, because the mean of its divisors is an integer number (44626862713416).

Almost surely, 2^{312221343122213} is an apocalyptic number.

It is an amenable number.

312221343122213 is a deficient number, since it is larger than the sum of its proper divisors (44793558585115).

312221343122213 is a wasteful number, since it uses less digits than its factorization.

312221343122213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23813695963.

The product of its digits is 20736, while the sum is 32.

The spelling of 312221343122213 in words is "three hundred twelve trillion, two hundred twenty-one billion, three hundred forty-three million, one hundred twenty-two thousand, two hundred thirteen".