323420819 has 2 divisors, whose sum is σ = 323420820. Its totient is φ = 323420818.

The previous prime is 323420813. The next prime is 323420821. The reversal of 323420819 is 918024323.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 323420819 - 2²⁰ = 322372243 is a prime.

It is a super-2 number, since 2×323420819² = 209202052325261522, which contains 22 as substring.

Together with 323420821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (323420813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161710409 + 161710410.

It is an arithmetic number, because the mean of its divisors is an integer number (161710410).

Almost surely, 2^323420819 is an apocalyptic number.

323420819 is a deficient number, since it is larger than the sum of its proper divisors (1).

323420819 is an equidigital number, since it uses as much as digits as its factorization.

323420819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 323420819 is about 17983.9044425842. The cubic root of 323420819 is about 686.4190441806.

The spelling of 323420819 in words is "three hundred twenty-three million, four hundred twenty thousand, eight hundred nineteen".