312494999 has 2 divisors, whose sum is σ = 312495000. Its totient is φ = 312494998.

The previous prime is 312494983. The next prime is 312495011. The reversal of 312494999 is 999494213.

It is a strong prime.

It is an emirp because it is prime and its reverse (999494213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312494999 - 2⁴ = 312494983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312494929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156247499 + 156247500.

It is an arithmetic number, because the mean of its divisors is an integer number (156247500).

Almost surely, 2^312494999 is an apocalyptic number.

312494999 is a deficient number, since it is larger than the sum of its proper divisors (1).

312494999 is an equidigital number, since it uses as much as digits as its factorization.

312494999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 629856, while the sum is 50.

The square root of 312494999 is about 17677.5280794573. The cubic root of 312494999 is about 678.6007841821.

The spelling of 312494999 in words is "three hundred twelve million, four hundred ninety-four thousand, nine hundred ninety-nine".