205308841 has 2 divisors, whose sum is σ = 205308842. Its totient is φ = 205308840.

The previous prime is 205308839. The next prime is 205308863. The reversal of 205308841 is 148803502.

205308841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106007616 + 99301225 = 10296^2 + 9965^2 .

It is a cyclic number.

It is not a de Polignac number, because 205308841 - 2¹ = 205308839 is a prime.

Together with 205308839, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (205308821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102654420 + 102654421.

It is an arithmetic number, because the mean of its divisors is an integer number (102654421).

Almost surely, 2^205308841 is an apocalyptic number.

It is an amenable number.

205308841 is a deficient number, since it is larger than the sum of its proper divisors (1).

205308841 is an equidigital number, since it uses as much as digits as its factorization.

205308841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 205308841 is about 14328.6021997960. The cubic root of 205308841 is about 589.9328095466.

The spelling of 205308841 in words is "two hundred five million, three hundred eight thousand, eight hundred forty-one".