312242339 has 2 divisors, whose sum is σ = 312242340. Its totient is φ = 312242338.

The previous prime is 312242263. The next prime is 312242341. The reversal of 312242339 is 933242213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312242339 - 2⁸ = 312242083 is a prime.

Together with 312242341, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312241339) 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, 156121169 + 156121170.

It is an arithmetic number, because the mean of its divisors is an integer number (156121170).

Almost surely, 2^312242339 is an apocalyptic number.

312242339 is a deficient number, since it is larger than the sum of its proper divisors (1).

312242339 is an equidigital number, since it uses as much as digits as its factorization.

312242339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 29.

The square root of 312242339 is about 17670.3802732143. The cubic root of 312242339 is about 678.4178463174.

The spelling of 312242339 in words is "three hundred twelve million, two hundred forty-two thousand, three hundred thirty-nine".