243216430 has 16 divisors (see below), whose sum is σ = 441239040. Its totient is φ = 96520032.

The previous prime is 243216419. The next prime is 243216437. The reversal of 243216430 is 34612342.

It is a junction number, because it is equal to n+sod(n) for n = 243216395 and 243216404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243216437) 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, 94485 + ... + 97024.

It is an arithmetic number, because the mean of its divisors is an integer number (27577440).

Almost surely, 2^243216430 is an apocalyptic number.

243216430 is a deficient number, since it is larger than the sum of its proper divisors (198022610).

243216430 is a wasteful number, since it uses less digits than its factorization.

243216430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191643.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 243216430 is about 15595.3977185579. The cubic root of 243216430 is about 624.2103563608.

Adding to 243216430 its reverse (34612342), we get a palindrome (277828772).

The spelling of 243216430 in words is "two hundred forty-three million, two hundred sixteen thousand, four hundred thirty".