243231424 has 14 divisors (see below), whose sum is σ = 482662484. Its totient is φ = 121615680.

The previous prime is 243231413. The next prime is 243231449. The reversal of 243231424 is 424132342.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1900182 + ... + 1900309.

Almost surely, 2^243231424 is an apocalyptic number.

It is an amenable number.

243231424 is a deficient number, since it is larger than the sum of its proper divisors (239431060).

243231424 is an equidigital number, since it uses as much as digits as its factorization.

243231424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800503 (or 3800493 counting only the distinct ones).

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

The square root of 243231424 is about 15595.8784298929. The cubic root of 243231424 is about 624.2231833695.

Adding to 243231424 its reverse (424132342), we get a palindrome (667363766).

It can be divided in two parts, 2432 and 31424, that added together give a square (33856 = 184²).

The spelling of 243231424 in words is "two hundred forty-three million, two hundred thirty-one thousand, four hundred twenty-four".