312123012199 has 2 divisors, whose sum is σ = 312123012200. Its totient is φ = 312123012198.

The previous prime is 312123012197. The next prime is 312123012317. The reversal of 312123012199 is 991210321213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312123012199 - 2¹ = 312123012197 is a prime.

Together with 312123012197, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312123012197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156061506099 + 156061506100.

It is an arithmetic number, because the mean of its divisors is an integer number (156061506100).

Almost surely, 2^312123012199 is an apocalyptic number.

312123012199 is a deficient number, since it is larger than the sum of its proper divisors (1).

312123012199 is an equidigital number, since it uses as much as digits as its factorization.

312123012199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 312123012199 in words is "three hundred twelve billion, one hundred twenty-three million, twelve thousand, one hundred ninety-nine".