320199823 has 2 divisors, whose sum is σ = 320199824. Its totient is φ = 320199822.

The previous prime is 320199769. The next prime is 320199829. The reversal of 320199823 is 328991023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320199823 - 2⁹ = 320199311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320199829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160099911 + 160099912.

It is an arithmetic number, because the mean of its divisors is an integer number (160099912).

Almost surely, 2^320199823 is an apocalyptic number.

320199823 is a deficient number, since it is larger than the sum of its proper divisors (1).

320199823 is an equidigital number, since it uses as much as digits as its factorization.

320199823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 320199823 is about 17894.1281709951. The cubic root of 320199823 is about 684.1327209312.

The spelling of 320199823 in words is "three hundred twenty million, one hundred ninety-nine thousand, eight hundred twenty-three".