243144441 has 12 divisors (see below), whose sum is σ = 351562068. Its totient is φ = 161933184.

The previous prime is 243144409. The next prime is 243144469. The reversal of 243144441 is 144441342.

It can be written as a sum of positive squares in 2 ways, for example, as 142563600 + 100580841 = 11940^2 + 10029^2 .

It is not a de Polignac number, because 243144441 - 2⁵ = 243144409 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243144401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3780 + ... + 22373.

It is an arithmetic number, because the mean of its divisors is an integer number (29296839).

Almost surely, 2^243144441 is an apocalyptic number.

It is an amenable number.

243144441 is a deficient number, since it is larger than the sum of its proper divisors (108417627).

243144441 is a wasteful number, since it uses less digits than its factorization.

243144441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27192 (or 27189 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 243144441 is about 15593.0895270950. The cubic root of 243144441 is about 624.1487641491.

Adding to 243144441 its reverse (144441342), we get a palindrome (387585783).

The spelling of 243144441 in words is "two hundred forty-three million, one hundred forty-four thousand, four hundred forty-one".