323000123321021 has 2 divisors, whose sum is σ = 323000123321022. Its totient is φ = 323000123321020.

The previous prime is 323000123321003. The next prime is 323000123321149. The reversal of 323000123321021 is 120123321000323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308648186644996 + 14351936676025 = 17568386^2 + 3788395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323000123321021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323000123321921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161500061660510 + 161500061660511.

It is an arithmetic number, because the mean of its divisors is an integer number (161500061660511).

Almost surely, 2^{323000123321021} is an apocalyptic number.

It is an amenable number.

323000123321021 is a deficient number, since it is larger than the sum of its proper divisors (1).

323000123321021 is an equidigital number, since it uses as much as digits as its factorization.

323000123321021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 323000123321021 its reverse (120123321000323), we get a palindrome (443123444321344).

The spelling of 323000123321021 in words is "three hundred twenty-three trillion, one hundred twenty-three million, three hundred twenty-one thousand, twenty-one".