231799 has 2 divisors, whose sum is σ = 231800. Its totient is φ = 231798.

The previous prime is 231779. The next prime is 231809. The reversal of 231799 is 997132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231799 - 2¹¹ = 229751 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115899 + 115900.

It is an arithmetic number, because the mean of its divisors is an integer number (115900).

2²³¹⁷⁹⁹ is an apocalyptic number.

231799 is a deficient number, since it is larger than the sum of its proper divisors (1).

231799 is an equidigital number, since it uses as much as digits as its factorization.

231799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 31.

The square root of 231799 is about 481.4550861711. The cubic root of 231799 is about 61.4285861083.

The spelling of 231799 in words is "two hundred thirty-one thousand, seven hundred ninety-nine".