323130310021 has 2 divisors, whose sum is σ = 323130310022. Its totient is φ = 323130310020.

The previous prime is 323130309979. The next prime is 323130310067. The reversal of 323130310021 is 120013031323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251151322500 + 71978987521 = 501150^2 + 268289^2 .

It is a cyclic number.

It is not a de Polignac number, because 323130310021 - 2¹⁷ = 323130178949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323130314021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161565155010 + 161565155011.

It is an arithmetic number, because the mean of its divisors is an integer number (161565155011).

Almost surely, 2^323130310021 is an apocalyptic number.

It is an amenable number.

323130310021 is a deficient number, since it is larger than the sum of its proper divisors (1).

323130310021 is an equidigital number, since it uses as much as digits as its factorization.

323130310021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 323130310021 its reverse (120013031323), we get a palindrome (443143341344).

The spelling of 323130310021 in words is "three hundred twenty-three billion, one hundred thirty million, three hundred ten thousand, twenty-one".