231043424 has 12 divisors (see below), whose sum is σ = 454866804. Its totient is φ = 115521696.

The previous prime is 231043411. The next prime is 231043453. The reversal of 231043424 is 424340132.

It is a self number, because there is not a number n which added to its sum of digits gives 231043424.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610022 + ... + 3610085.

It is an arithmetic number, because the mean of its divisors is an integer number (37905567).

Almost surely, 2^231043424 is an apocalyptic number.

It is an amenable number.

231043424 is a deficient number, since it is larger than the sum of its proper divisors (223823380).

231043424 is an equidigital number, since it uses as much as digits as its factorization.

231043424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7220117 (or 7220109 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 231043424 is about 15200.1126311617. The cubic root of 231043424 is about 613.6176889817.

Adding to 231043424 its reverse (424340132), we get a palindrome (655383556).

The spelling of 231043424 in words is "two hundred thirty-one million, forty-three thousand, four hundred twenty-four".