243424203 has 32 divisors (see below), whose sum is σ = 372321792. Its totient is φ = 140025600.

The previous prime is 243424189. The next prime is 243424273. The reversal of 243424203 is 302424342.

It is a de Polignac number, because none of the positive numbers 2^k-243424203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243424273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102813 + ... + 105153.

It is an arithmetic number, because the mean of its divisors is an integer number (11635056).

Almost surely, 2^243424203 is an apocalyptic number.

243424203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

243424203 is a deficient number, since it is larger than the sum of its proper divisors (128897589).

243424203 is a wasteful number, since it uses less digits than its factorization.

243424203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 243424203 is about 15602.0576527585. The cubic root of 243424203 is about 624.3880542581.

Adding to 243424203 its reverse (302424342), we get a palindrome (545848545).

The spelling of 243424203 in words is "two hundred forty-three million, four hundred twenty-four thousand, two hundred three".