312242413243309 has 2 divisors, whose sum is σ = 312242413243310. Its totient is φ = 312242413243308.

The previous prime is 312242413243303. The next prime is 312242413243421. The reversal of 312242413243309 is 903342314242213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279963505052100 + 32278908191209 = 16732110^2 + 5681453^2 .

It is a cyclic number.

It is not a de Polignac number, because 312242413243309 - 2²³ = 312242404854701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312242413243303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156121206621654 + 156121206621655.

It is an arithmetic number, because the mean of its divisors is an integer number (156121206621655).

Almost surely, 2^{312242413243309} is an apocalyptic number.

It is an amenable number.

312242413243309 is a deficient number, since it is larger than the sum of its proper divisors (1).

312242413243309 is an equidigital number, since it uses as much as digits as its factorization.

312242413243309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 312242413243309 in words is "three hundred twelve trillion, two hundred forty-two billion, four hundred thirteen million, two hundred forty-three thousand, three hundred nine".