243204231 has 8 divisors (see below), whose sum is σ = 338371200. Its totient is φ = 155086712.

The previous prime is 243204229. The next prime is 243204281. The reversal of 243204231 is 132402342.

243204231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 243204231 - 2¹ = 243204229 is a prime.

It is a super-2 number, since 2×243204231² = 118296595952602722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243204198 and 243204207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243204211) 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, 1762281 + ... + 1762418.

It is an arithmetic number, because the mean of its divisors is an integer number (42296400).

Almost surely, 2^243204231 is an apocalyptic number.

243204231 is a deficient number, since it is larger than the sum of its proper divisors (95166969).

243204231 is a wasteful number, since it uses less digits than its factorization.

243204231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524725.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 243204231 is about 15595.0066046796. The cubic root of 243204231 is about 624.1999200189.

Adding to 243204231 its reverse (132402342), we get a palindrome (375606573).

The spelling of 243204231 in words is "two hundred forty-three million, two hundred four thousand, two hundred thirty-one".