231322199 has 2 divisors, whose sum is σ = 231322200. Its totient is φ = 231322198.

The previous prime is 231322153. The next prime is 231322211. The reversal of 231322199 is 991223132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231322199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231322139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661099 + 115661100.

It is an arithmetic number, because the mean of its divisors is an integer number (115661100).

Almost surely, 2^231322199 is an apocalyptic number.

231322199 is a deficient number, since it is larger than the sum of its proper divisors (1).

231322199 is an equidigital number, since it uses as much as digits as its factorization.

231322199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 231322199 is about 15209.2800289823. The cubic root of 231322199 is about 613.8643850558.

The spelling of 231322199 in words is "two hundred thirty-one million, three hundred twenty-two thousand, one hundred ninety-nine".