204434240343213 has 32 divisors (see below), whose sum is σ = 278038124992512. Its totient is φ = 133575942340800.

The previous prime is 204434240343197. The next prime is 204434240343233. The reversal of 204434240343213 is 312343042434402.

It is a happy number.

It is not a de Polignac number, because 204434240343213 - 2⁴ = 204434240343197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204434240343233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1495131856 + ... + 1495268582.

It is an arithmetic number, because the mean of its divisors is an integer number (8688691406016).

Almost surely, 2^{204434240343213} is an apocalyptic number.

It is an amenable number.

204434240343213 is a deficient number, since it is larger than the sum of its proper divisors (73603884649299).

204434240343213 is a wasteful number, since it uses less digits than its factorization.

204434240343213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165945.

The product of its (nonzero) digits is 663552, while the sum is 39.

Adding to 204434240343213 its reverse (312343042434402), we get a palindrome (516777282777615).

The spelling of 204434240343213 in words is "two hundred four trillion, four hundred thirty-four billion, two hundred forty million, three hundred forty-three thousand, two hundred thirteen".