323043441420421 has 2 divisors, whose sum is σ = 323043441420422. Its totient is φ = 323043441420420.

The previous prime is 323043441420389. The next prime is 323043441420437. The reversal of 323043441420421 is 124024144340323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318084157387396 + 4959284033025 = 17834914^2 + 2226945^2 .

It is a cyclic number.

It is not a de Polignac number, because 323043441420421 - 2⁵ = 323043441420389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323043441420451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161521720710210 + 161521720710211.

It is an arithmetic number, because the mean of its divisors is an integer number (161521720710211).

Almost surely, 2^{323043441420421} is an apocalyptic number.

It is an amenable number.

323043441420421 is a deficient number, since it is larger than the sum of its proper divisors (1).

323043441420421 is an equidigital number, since it uses as much as digits as its factorization.

323043441420421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 323043441420421 its reverse (124024144340323), we get a palindrome (447067585760744).

The spelling of 323043441420421 in words is "three hundred twenty-three trillion, forty-three billion, four hundred forty-one million, four hundred twenty thousand, four hundred twenty-one".