312201111979 has 2 divisors, whose sum is σ = 312201111980. Its totient is φ = 312201111978.

The previous prime is 312201111961. The next prime is 312201112061. The reversal of 312201111979 is 979111102213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312201111979 - 2³¹ = 310053628331 is a prime.

It is not a weakly prime, because it can be changed into another prime (312201111919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156100555989 + 156100555990.

It is an arithmetic number, because the mean of its divisors is an integer number (156100555990).

Almost surely, 2^312201111979 is an apocalyptic number.

312201111979 is a deficient number, since it is larger than the sum of its proper divisors (1).

312201111979 is an equidigital number, since it uses as much as digits as its factorization.

312201111979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 37.

The spelling of 312201111979 in words is "three hundred twelve billion, two hundred one million, one hundred eleven thousand, nine hundred seventy-nine".