312393859 has 2 divisors, whose sum is σ = 312393860. Its totient is φ = 312393858.

The previous prime is 312393817. The next prime is 312393863. The reversal of 312393859 is 958393213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312393859 - 2¹⁷ = 312262787 is a prime.

It is not a weakly prime, because it can be changed into another prime (312393869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156196929 + 156196930.

It is an arithmetic number, because the mean of its divisors is an integer number (156196930).

Almost surely, 2^312393859 is an apocalyptic number.

312393859 is a deficient number, since it is larger than the sum of its proper divisors (1).

312393859 is an equidigital number, since it uses as much as digits as its factorization.

312393859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The square root of 312393859 is about 17674.6671538674. The cubic root of 312393859 is about 678.5275658486.

The spelling of 312393859 in words is "three hundred twelve million, three hundred ninety-three thousand, eight hundred fifty-nine".