243603243 has 12 divisors (see below), whose sum is σ = 378938560. Its totient is φ = 149909616.

The previous prime is 243603233. The next prime is 243603247. The reversal of 243603243 is 342306342.

It is a happy number.

243603243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243603243 - 2⁹ = 243602731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243603247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1040923 + ... + 1041156.

Almost surely, 2^243603243 is an apocalyptic number.

243603243 is a deficient number, since it is larger than the sum of its proper divisors (135335317).

243603243 is a wasteful number, since it uses less digits than its factorization.

243603243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082098 (or 2082095 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

The square root of 243603243 is about 15607.7943028475. The cubic root of 243603243 is about 624.5410971622.

Adding to 243603243 its reverse (342306342), we get a palindrome (585909585).

The spelling of 243603243 in words is "two hundred forty-three million, six hundred three thousand, two hundred forty-three".