231340999 has 2 divisors, whose sum is σ = 231341000. Its totient is φ = 231340998.

The previous prime is 231340951. The next prime is 231341027. The reversal of 231340999 is 999043132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231340999 - 2⁷ = 231340871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231340939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115670499 + 115670500.

It is an arithmetic number, because the mean of its divisors is an integer number (115670500).

Almost surely, 2^231340999 is an apocalyptic number.

231340999 is a deficient number, since it is larger than the sum of its proper divisors (1).

231340999 is an equidigital number, since it uses as much as digits as its factorization.

231340999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 231340999 is about 15209.8980601449. The cubic root of 231340999 is about 613.8810145850.

The spelling of 231340999 in words is "two hundred thirty-one million, three hundred forty thousand, nine hundred ninety-nine".