243441330 has 64 divisors (see below), whose sum is σ = 640227456. Its totient is φ = 58752000.

The previous prime is 243441323. The next prime is 243441353. The reversal of 243441330 is 33144342.

243441330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 243441330.

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, 78000 + ... + 81060.

It is an arithmetic number, because the mean of its divisors is an integer number (10003554).

Almost surely, 2^243441330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243441330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320113728).

243441330 is an abundant number, since it is smaller than the sum of its proper divisors (396786126).

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

243441330 is a wasteful number, since it uses less digits than its factorization.

243441330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 243441330 is about 15602.6065130157. The cubic root of 243441330 is about 624.4026976163.

Adding to 243441330 its reverse (33144342), we get a palindrome (276585672).

The spelling of 243441330 in words is "two hundred forty-three million, four hundred forty-one thousand, three hundred thirty".