312001199 has 2 divisors, whose sum is σ = 312001200. Its totient is φ = 312001198.

The previous prime is 312001189. The next prime is 312001201. The reversal of 312001199 is 991100213.

It is a strong prime.

It is an emirp because it is prime and its reverse (991100213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312001199 - 2²⁴ = 295223983 is a prime.

It is a Sophie Germain prime.

Together with 312001201, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312001189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156000599 + 156000600.

It is an arithmetic number, because the mean of its divisors is an integer number (156000600).

Almost surely, 2^312001199 is an apocalyptic number.

312001199 is a deficient number, since it is larger than the sum of its proper divisors (1).

312001199 is an equidigital number, since it uses as much as digits as its factorization.

312001199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 312001199 is about 17663.5556726272. Note that the first 3 decimals coincide. The cubic root of 312001199 is about 678.2431574185.

The spelling of 312001199 in words is "three hundred twelve million, one thousand, one hundred ninety-nine".