204310021430 has 32 divisors (see below), whose sum is σ = 383773593600. Its totient is φ = 78165479392.

The previous prime is 204310021417. The next prime is 204310021439. The reversal of 204310021430 is 34120013402.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204310021439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5833511 + ... + 5868429.

It is an arithmetic number, because the mean of its divisors is an integer number (11992924800).

Almost surely, 2^204310021430 is an apocalyptic number.

204310021430 is a deficient number, since it is larger than the sum of its proper divisors (179463572170).

204310021430 is a wasteful number, since it uses less digits than its factorization.

204310021430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60388.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 204310021430 its reverse (34120013402), we get a palindrome (238430034832).

The spelling of 204310021430 in words is "two hundred four billion, three hundred ten million, twenty-one thousand, four hundred thirty".