243423205 has 8 divisors (see below), whose sum is σ = 292645152. Its totient is φ = 194380368.

The previous prime is 243423163. The next prime is 243423217. The reversal of 243423205 is 502324342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243423205 - 2⁷ = 243423077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243423205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41767 + ... + 47236.

It is an arithmetic number, because the mean of its divisors is an integer number (36580644).

Almost surely, 2^243423205 is an apocalyptic number.

It is an amenable number.

243423205 is a deficient number, since it is larger than the sum of its proper divisors (49221947).

243423205 is an equidigital number, since it uses as much as digits as its factorization.

243423205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89555.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 243423205 is about 15602.0256697648. The cubic root of 243423205 is about 624.3872009601.

Adding to 243423205 its reverse (502324342), we get a palindrome (745747547).

The spelling of 243423205 in words is "two hundred forty-three million, four hundred twenty-three thousand, two hundred five".