243204331404 has 12 divisors (see below), whose sum is σ = 567476773304. Its totient is φ = 81068110464.

The previous prime is 243204331387. The next prime is 243204331417. The reversal of 243204331404 is 404133402342.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×243204331404² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10133513797 + ... + 10133513820.

Almost surely, 2^243204331404 is an apocalyptic number.

It is an amenable number.

243204331404 is an abundant number, since it is smaller than the sum of its proper divisors (324272441900).

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

243204331404 is a wasteful number, since it uses less digits than its factorization.

243204331404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20267027624 (or 20267027622 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 243204331404 its reverse (404133402342), we get a palindrome (647337733746).

The spelling of 243204331404 in words is "two hundred forty-three billion, two hundred four million, three hundred thirty-one thousand, four hundred four".