312242413243421 has 2 divisors, whose sum is σ = 312242413243422. Its totient is φ = 312242413243420.

The previous prime is 312242413243309. The next prime is 312242413243433. The reversal of 312242413243421 is 124342314242213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238843115702500 + 73399297540921 = 15454550^2 + 8567339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312242413243421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312242413243471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156121206621710 + 156121206621711.

It is an arithmetic number, because the mean of its divisors is an integer number (156121206621711).

Almost surely, 2^{312242413243421} is an apocalyptic number.

It is an amenable number.

312242413243421 is a deficient number, since it is larger than the sum of its proper divisors (1).

312242413243421 is an equidigital number, since it uses as much as digits as its factorization.

312242413243421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 38.

Adding to 312242413243421 its reverse (124342314242213), we get a palindrome (436584727485634).

The spelling of 312242413243421 in words is "three hundred twelve trillion, two hundred forty-two billion, four hundred thirteen million, two hundred forty-three thousand, four hundred twenty-one".