243242303 has 4 divisors (see below), whose sum is σ = 243449448. Its totient is φ = 243035160.

The previous prime is 243242269. The next prime is 243242323. The reversal of 243242303 is 303242342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243242303 - 2¹⁰ = 243241279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243242323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101801 + ... + 104162.

It is an arithmetic number, because the mean of its divisors is an integer number (60862362).

Almost surely, 2^243242303 is an apocalyptic number.

243242303 is a deficient number, since it is larger than the sum of its proper divisors (207145).

243242303 is a wasteful number, since it uses less digits than its factorization.

243242303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207144.

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

The square root of 243242303 is about 15596.2272040388. The cubic root of 243242303 is about 624.2324897640.

Adding to 243242303 its reverse (303242342), we get a palindrome (546484645).

The spelling of 243242303 in words is "two hundred forty-three million, two hundred forty-two thousand, three hundred three".