231423424 has 28 divisors (see below), whose sum is σ = 479200464. Its totient is φ = 110680064.

The previous prime is 231423403. The next prime is 231423443. The reversal of 231423424 is 424324132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77137 + ... + 80080.

Almost surely, 2^231423424 is an apocalyptic number.

It is an amenable number.

231423424 is an abundant number, since it is smaller than the sum of its proper divisors (247777040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231423424 is a wasteful number, since it uses less digits than its factorization.

231423424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157252 (or 157242 counting only the distinct ones).

The product of its digits is 4608, while the sum is 25.

The square root of 231423424 is about 15212.6074030720. The cubic root of 231423424 is about 613.9539129395.

Adding to 231423424 its reverse (424324132), we get a palindrome (655747556).

The spelling of 231423424 in words is "two hundred thirty-one million, four hundred twenty-three thousand, four hundred twenty-four".