312299959 has 2 divisors, whose sum is σ = 312299960. Its totient is φ = 312299958.

The previous prime is 312299899. The next prime is 312299969. The reversal of 312299959 is 959992213.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (959992213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312299959 - 2⁷ = 312299831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312299969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156149979 + 156149980.

It is an arithmetic number, because the mean of its divisors is an integer number (156149980).

Almost surely, 2^312299959 is an apocalyptic number.

312299959 is a deficient number, since it is larger than the sum of its proper divisors (1).

312299959 is an equidigital number, since it uses as much as digits as its factorization.

312299959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 393660, while the sum is 49.

The square root of 312299959 is about 17672.0106100013. The cubic root of 312299959 is about 678.4595746238.

The spelling of 312299959 in words is "three hundred twelve million, two hundred ninety-nine thousand, nine hundred fifty-nine".