243423430 has 16 divisors (see below), whose sum is σ = 448352784. Its totient is φ = 95104800.

The previous prime is 243423413. The next prime is 243423431. The reversal of 243423430 is 34324342.

It is a junction number, because it is equal to n+sod(n) for n = 243423395 and 243423404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243423431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282621 + ... + 283480.

It is an arithmetic number, because the mean of its divisors is an integer number (28022049).

Almost surely, 2^243423430 is an apocalyptic number.

243423430 is a deficient number, since it is larger than the sum of its proper divisors (204929354).

243423430 is a wasteful number, since it uses less digits than its factorization.

243423430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566151.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 243423430 is about 15602.0328803653. The cubic root of 243423430 is about 624.3873933371.

Adding to 243423430 its reverse (34324342), we get a palindrome (277747772).

It can be divided in two parts, 24342 and 3430, that added together give a palindrome (27772).

The spelling of 243423430 in words is "two hundred forty-three million, four hundred twenty-three thousand, four hundred thirty".