312013222999 has 4 divisors (see below), whose sum is σ = 313597046664. Its totient is φ = 310429399336.

The previous prime is 312013222981. The next prime is 312013223021. The reversal of 312013222999 is 999222310213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999222310213 = 131 ⋅7627651223.

It is a cyclic number.

It is not a de Polignac number, because 312013222999 - 2⁵ = 312013222967 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 (312013225999) 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, 791911537 + ... + 791911930.

It is an arithmetic number, because the mean of its divisors is an integer number (78399261666).

Almost surely, 2^312013222999 is an apocalyptic number.

312013222999 is a deficient number, since it is larger than the sum of its proper divisors (1583823665).

312013222999 is a wasteful number, since it uses less digits than its factorization.

312013222999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583823664.

The product of its (nonzero) digits is 104976, while the sum is 43.

The spelling of 312013222999 in words is "three hundred twelve billion, thirteen million, two hundred twenty-two thousand, nine hundred ninety-nine".