243423203 has 8 divisors (see below), whose sum is σ = 247840560. Its totient is φ = 239015680.

The previous prime is 243423163. The next prime is 243423217. The reversal of 243423203 is 302324342.

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 243423203 - 2¹⁸ = 243161059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243423233) 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, 62843 + ... + 66603.

It is an arithmetic number, because the mean of its divisors is an integer number (30980070).

Almost surely, 2^243423203 is an apocalyptic number.

243423203 is a deficient number, since it is larger than the sum of its proper divisors (4417357).

243423203 is a wasteful number, since it uses less digits than its factorization.

243423203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4917.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 243423203 is about 15602.0256056706. The cubic root of 243423203 is about 624.3871992501.

Adding to 243423203 its reverse (302324342), we get a palindrome (545747545).

The spelling of 243423203 in words is "two hundred forty-three million, four hundred twenty-three thousand, two hundred three".