243432243 has 16 divisors (see below), whose sum is σ = 372275200. Its totient is φ = 157052520.

The previous prime is 243432227. The next prime is 243432257. The reversal of 243432243 is 342234342.

243432243 is a `hidden beast` number, since 2 + 434 + 3 + 224 + 3 = 666.

It is not a de Polignac number, because 243432243 - 2⁴ = 243432227 is a prime.

It is a super-2 number, since 2×243432243² = 118518513864022098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243432283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144583 + ... + 146256.

It is an arithmetic number, because the mean of its divisors is an integer number (23267200).

Almost surely, 2^243432243 is an apocalyptic number.

243432243 is a deficient number, since it is larger than the sum of its proper divisors (128842957).

243432243 is a wasteful number, since it uses less digits than its factorization.

243432243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290879 (or 290873 counting only the distinct ones).

The product of its digits is 13824, while the sum is 27.

The square root of 243432243 is about 15602.3153089533. The cubic root of 243432243 is about 624.3949284371.

Adding to 243432243 its reverse (342234342), we get a palindrome (585666585).

The spelling of 243432243 in words is "two hundred forty-three million, four hundred thirty-two thousand, two hundred forty-three".