231604199 has 2 divisors, whose sum is σ = 231604200. Its totient is φ = 231604198.

The previous prime is 231604187. The next prime is 231604229. The reversal of 231604199 is 991406132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231604199 - 2⁸ = 231603943 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231604159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115802099 + 115802100.

It is an arithmetic number, because the mean of its divisors is an integer number (115802100).

Almost surely, 2^231604199 is an apocalyptic number.

231604199 is a deficient number, since it is larger than the sum of its proper divisors (1).

231604199 is an equidigital number, since it uses as much as digits as its factorization.

231604199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 231604199 is about 15218.5478610806. The cubic root of 231604199 is about 614.1137334540.

The spelling of 231604199 in words is "two hundred thirty-one million, six hundred four thousand, one hundred ninety-nine".