304144342310021 has 2 divisors, whose sum is σ = 304144342310022. Its totient is φ = 304144342310020.

The previous prime is 304144342309999. The next prime is 304144342310023. The reversal of 304144342310021 is 120013243441403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 275008691224996 + 29135651085025 = 16583386^2 + 5397745^2 .

It is a cyclic number.

It is not a de Polignac number, because 304144342310021 - 2³⁴ = 304127162440837 is a prime.

Together with 304144342310023, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 304144342310021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304144342310023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152072171155010 + 152072171155011.

It is an arithmetic number, because the mean of its divisors is an integer number (152072171155011).

Almost surely, 2^{304144342310021} is an apocalyptic number.

It is an amenable number.

304144342310021 is a deficient number, since it is larger than the sum of its proper divisors (1).

304144342310021 is an equidigital number, since it uses as much as digits as its factorization.

304144342310021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 304144342310021 its reverse (120013243441403), we get a palindrome (424157585751424).

The spelling of 304144342310021 in words is "three hundred four trillion, one hundred forty-four billion, three hundred forty-two million, three hundred ten thousand, twenty-one".