321253414813 has 2 divisors, whose sum is σ = 321253414814. Its totient is φ = 321253414812.

The previous prime is 321253414789. The next prime is 321253414819. The reversal of 321253414813 is 318414352123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312942904569 + 8310510244 = 559413^2 + 91162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321253414813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321253414819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160626707406 + 160626707407.

It is an arithmetic number, because the mean of its divisors is an integer number (160626707407).

Almost surely, 2^321253414813 is an apocalyptic number.

It is an amenable number.

321253414813 is a deficient number, since it is larger than the sum of its proper divisors (1).

321253414813 is an equidigital number, since it uses as much as digits as its factorization.

321253414813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

Adding to 321253414813 its reverse (318414352123), we get a palindrome (639667766936).

The spelling of 321253414813 in words is "three hundred twenty-one billion, two hundred fifty-three million, four hundred fourteen thousand, eight hundred thirteen".