243205230 has 64 divisors (see below), whose sum is σ = 638005248. Its totient is φ = 59066880.

The previous prime is 243205201. The next prime is 243205241. The reversal of 243205230 is 32502342.

It is a junction number, because it is equal to n+sod(n) for n = 243205197 and 243205206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8119 + ... + 23501.

It is an arithmetic number, because the mean of its divisors is an integer number (9968832).

Almost surely, 2^243205230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243205230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319002624).

243205230 is an abundant number, since it is smaller than the sum of its proper divisors (394800018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243205230 is a wasteful number, since it uses less digits than its factorization.

243205230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15441.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 243205230 is about 15595.0386341298. The cubic root of 243205230 is about 624.2007746845.

Adding to 243205230 its reverse (32502342), we get a palindrome (275707572).

The spelling of 243205230 in words is "two hundred forty-three million, two hundred five thousand, two hundred thirty".