204004431430 has 16 divisors (see below), whose sum is σ = 367286809824. Its totient is φ = 81584254080.

The previous prime is 204004431349. The next prime is 204004431437. The reversal of 204004431430 is 34134400402.

It is a junction number, because it is equal to n+sod(n) for n = 204004431395 and 204004431404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204004431437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2140851 + ... + 2234110.

It is an arithmetic number, because the mean of its divisors is an integer number (22955425614).

Almost surely, 2^204004431430 is an apocalyptic number.

204004431430 is a deficient number, since it is larger than the sum of its proper divisors (163282378394).

204004431430 is a wasteful number, since it uses less digits than its factorization.

204004431430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379631.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 204004431430 its reverse (34134400402), we get a palindrome (238138831832).

The spelling of 204004431430 in words is "two hundred four billion, four million, four hundred thirty-one thousand, four hundred thirty".