312112222019 has 16 divisors (see below), whose sum is σ = 341371283904. Its totient is φ = 283615516800.

The previous prime is 312112222013. The next prime is 312112222027. The reversal of 312112222019 is 910222211213.

It is a cyclic number.

It is not a de Polignac number, because 312112222019 - 2²⁴ = 312095444803 is a prime.

It is a super-2 number, since 2×312112222019² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312112222013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354317 + ... + 865889.

It is an arithmetic number, because the mean of its divisors is an integer number (21335705244).

Almost surely, 2^312112222019 is an apocalyptic number.

312112222019 is a deficient number, since it is larger than the sum of its proper divisors (29259061885).

312112222019 is a wasteful number, since it uses less digits than its factorization.

312112222019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512318.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 312112222019 in words is "three hundred twelve billion, one hundred twelve million, two hundred twenty-two thousand, nineteen".