204434210343 has 16 divisors (see below), whose sum is σ = 297366765696. Its totient is φ = 123896223840.

The previous prime is 204434210287. The next prime is 204434210347. The reversal of 204434210343 is 343012434402.

It is a happy number.

It is not a de Polignac number, because 204434210343 - 2⁹ = 204434209831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204434210343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204434210347) 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 15 ways as a sum of consecutive naturals, for example, 1857780 + ... + 1964742.

It is an arithmetic number, because the mean of its divisors is an integer number (18585422856).

Almost surely, 2^204434210343 is an apocalyptic number.

204434210343 is a deficient number, since it is larger than the sum of its proper divisors (92932555353).

204434210343 is a wasteful number, since it uses less digits than its factorization.

204434210343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164894.

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

Adding to 204434210343 its reverse (343012434402), we get a palindrome (547446644745).

The spelling of 204434210343 in words is "two hundred four billion, four hundred thirty-four million, two hundred ten thousand, three hundred forty-three".