305442612013321 has 2 divisors, whose sum is σ = 305442612013322. Its totient is φ = 305442612013320.

The previous prime is 305442612013291. The next prime is 305442612013379. The reversal of 305442612013321 is 123310216244503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242811532572921 + 62631079440400 = 15582411^2 + 7913980^2 .

It is a cyclic number.

It is not a de Polignac number, because 305442612013321 - 2²³ = 305442603624713 is a prime.

It is not a weakly prime, because it can be changed into another prime (305442612013391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152721306006660 + 152721306006661.

It is an arithmetic number, because the mean of its divisors is an integer number (152721306006661).

Almost surely, 2^{305442612013321} is an apocalyptic number.

It is an amenable number.

305442612013321 is a deficient number, since it is larger than the sum of its proper divisors (1).

305442612013321 is an equidigital number, since it uses as much as digits as its factorization.

305442612013321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 305442612013321 its reverse (123310216244503), we get a palindrome (428752828257824).

The spelling of 305442612013321 in words is "three hundred five trillion, four hundred forty-two billion, six hundred twelve million, thirteen thousand, three hundred twenty-one".