312199799 has 2 divisors, whose sum is σ = 312199800. Its totient is φ = 312199798.

The previous prime is 312199763. The next prime is 312199801. The reversal of 312199799 is 997991213.

It is a strong prime.

It is an emirp because it is prime and its reverse (997991213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312199799 - 2¹² = 312195703 is a prime.

Together with 312199801, 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 (312192799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156099899 + 156099900.

It is an arithmetic number, because the mean of its divisors is an integer number (156099900).

Almost surely, 2^312199799 is an apocalyptic number.

312199799 is a deficient number, since it is larger than the sum of its proper divisors (1).

312199799 is an equidigital number, since it uses as much as digits as its factorization.

312199799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 275562, while the sum is 50.

The square root of 312199799 is about 17669.1765229736. The cubic root of 312199799 is about 678.3870356272.

The spelling of 312199799 in words is "three hundred twelve million, one hundred ninety-nine thousand, seven hundred ninety-nine".