243144004203 has 64 divisors (see below), whose sum is σ = 380540160000. Its totient is φ = 153208419840.

The previous prime is 243144004157. The next prime is 243144004217. The reversal of 243144004203 is 302400441342.

It is a happy number.

243144004203 is a `hidden beast` number, since 2 + 43 + 14 + 400 + 4 + 203 = 666.

It is not a de Polignac number, because 243144004203 - 2¹⁸ = 243143742059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (243144004223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11122558 + ... + 11144396.

It is an arithmetic number, because the mean of its divisors is an integer number (5945940000).

Almost surely, 2^243144004203 is an apocalyptic number.

243144004203 is a deficient number, since it is larger than the sum of its proper divisors (137396155797).

243144004203 is a wasteful number, since it uses less digits than its factorization.

243144004203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22177 (or 22171 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 243144004203 its reverse (302400441342), we get a palindrome (545544445545).

The spelling of 243144004203 in words is "two hundred forty-three billion, one hundred forty-four million, four thousand, two hundred three".