312345799 has 2 divisors, whose sum is σ = 312345800. Its totient is φ = 312345798.

The previous prime is 312345797. The next prime is 312345821. The reversal of 312345799 is 997543213.

It is a weak prime.

It is an emirp because it is prime and its reverse (997543213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312345799 - 2¹ = 312345797 is a prime.

Together with 312345797, 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 (312345793) 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, 156172899 + 156172900.

It is an arithmetic number, because the mean of its divisors is an integer number (156172900).

Almost surely, 2^312345799 is an apocalyptic number.

312345799 is a deficient number, since it is larger than the sum of its proper divisors (1).

312345799 is an equidigital number, since it uses as much as digits as its factorization.

312345799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 312345799 is about 17673.3075285867. The cubic root of 312345799 is about 678.4927682085.

The spelling of 312345799 in words is "three hundred twelve million, three hundred forty-five thousand, seven hundred ninety-nine".