231468439 has 2 divisors, whose sum is σ = 231468440. Its totient is φ = 231468438.

The previous prime is 231468403. The next prime is 231468443. The reversal of 231468439 is 934864132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231468439 - 2²⁷ = 97250711 is a prime.

It is equal to p_12718993 and since 231468439 and 12718993 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231468239) 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, 115734219 + 115734220.

It is an arithmetic number, because the mean of its divisors is an integer number (115734220).

Almost surely, 2^231468439 is an apocalyptic number.

231468439 is a deficient number, since it is larger than the sum of its proper divisors (1).

231468439 is an equidigital number, since it uses as much as digits as its factorization.

231468439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 40.

The square root of 231468439 is about 15214.0868605382. The cubic root of 231468439 is about 613.9937178178.

The spelling of 231468439 in words is "two hundred thirty-one million, four hundred sixty-eight thousand, four hundred thirty-nine".