397911323 has 2 divisors, whose sum is σ = 397911324. Its totient is φ = 397911322.

The previous prime is 397911313. The next prime is 397911329. The reversal of 397911323 is 323119793.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 397911323 - 2¹⁶ = 397845787 is a prime.

It is a super-2 number, since 2×397911323² = 316666841943220658, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (397911329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198955661 + 198955662.

It is an arithmetic number, because the mean of its divisors is an integer number (198955662).

Almost surely, 2^397911323 is an apocalyptic number.

397911323 is a deficient number, since it is larger than the sum of its proper divisors (1).

397911323 is an equidigital number, since it uses as much as digits as its factorization.

397911323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 38.

The square root of 397911323 is about 19947.7147312668. The cubic root of 397911323 is about 735.5216023853.

It can be divided in two parts, 39791 and 1323, that added together give a palindrome (41114).

The spelling of 397911323 in words is "three hundred ninety-seven million, nine hundred eleven thousand, three hundred twenty-three".