204313243447 has 2 divisors, whose sum is σ = 204313243448. Its totient is φ = 204313243446.

The previous prime is 204313243439. The next prime is 204313243471. The reversal of 204313243447 is 744342313402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204313243447 - 2³ = 204313243439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204313243417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102156621723 + 102156621724.

It is an arithmetic number, because the mean of its divisors is an integer number (102156621724).

Almost surely, 2^204313243447 is an apocalyptic number.

204313243447 is a deficient number, since it is larger than the sum of its proper divisors (1).

204313243447 is an equidigital number, since it uses as much as digits as its factorization.

204313243447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 37.

Adding to 204313243447 its reverse (744342313402), we get a palindrome (948655556849).

The spelling of 204313243447 in words is "two hundred four billion, three hundred thirteen million, two hundred forty-three thousand, four hundred forty-seven".