243321230404 has 36 divisors (see below), whose sum is σ = 495708000060. Its totient is φ = 104201475840.

The previous prime is 243321230389. The next prime is 243321230407. The reversal of 243321230404 is 404032123342.

It can be written as a sum of positive squares in 2 ways, for example, as 209004408900 + 34316821504 = 457170^2 + 185248^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (243321230407) 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, 210969 + ... + 728800.

Almost surely, 2^243321230404 is an apocalyptic number.

It is an amenable number.

243321230404 is an abundant number, since it is smaller than the sum of its proper divisors (252386769656).

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

243321230404 is a wasteful number, since it uses less digits than its factorization.

243321230404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941108 (or 941099 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 243321230404 its reverse (404032123342), we get a palindrome (647353353746).

The spelling of 243321230404 in words is "two hundred forty-three billion, three hundred twenty-one million, two hundred thirty thousand, four hundred four".