323020421 has 2 divisors, whose sum is σ = 323020422. Its totient is φ = 323020420.

The previous prime is 323020367. The next prime is 323020447. The reversal of 323020421 is 124020323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274564900 + 48455521 = 16570^2 + 6961^2 .

It is a cyclic number.

It is not a de Polignac number, because 323020421 - 2²² = 318826117 is a prime.

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 323020421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323020721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161510210 + 161510211.

It is an arithmetic number, because the mean of its divisors is an integer number (161510211).

Almost surely, 2^323020421 is an apocalyptic number.

It is an amenable number.

323020421 is a deficient number, since it is larger than the sum of its proper divisors (1).

323020421 is an equidigital number, since it uses as much as digits as its factorization.

323020421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 323020421 is about 17972.7688740494. The cubic root of 323020421 is about 686.1356628058.

Adding to 323020421 its reverse (124020323), we get a palindrome (447040744).

The spelling of 323020421 in words is "three hundred twenty-three million, twenty thousand, four hundred twenty-one".