231341239 has 2 divisors, whose sum is σ = 231341240. Its totient is φ = 231341238.

The previous prime is 231341233. The next prime is 231341249. The reversal of 231341239 is 932143132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231341239 - 2⁷ = 231341111 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 (231341233) 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, 115670619 + 115670620.

It is an arithmetic number, because the mean of its divisors is an integer number (115670620).

Almost surely, 2^231341239 is an apocalyptic number.

231341239 is a deficient number, since it is larger than the sum of its proper divisors (1).

231341239 is an equidigital number, since it uses as much as digits as its factorization.

231341239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 231341239 is about 15209.9059497421. The cubic root of 231341239 is about 613.8812268711.

The spelling of 231341239 in words is "two hundred thirty-one million, three hundred forty-one thousand, two hundred thirty-nine".