206309041 has 4 divisors (see below), whose sum is σ = 206921572. Its totient is φ = 205696512.

The previous prime is 206309039. The next prime is 206309083. The reversal of 206309041 is 140903602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 134652816 + 71656225 = 11604^2 + 8465^2 .

It is a cyclic number.

It is not a de Polignac number, because 206309041 - 2¹ = 206309039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206308997 and 206309015.

It is not an unprimeable number, because it can be changed into a prime (206309021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305760 + ... + 306433.

It is an arithmetic number, because the mean of its divisors is an integer number (51730393).

Almost surely, 2^206309041 is an apocalyptic number.

It is an amenable number.

206309041 is a deficient number, since it is larger than the sum of its proper divisors (612531).

206309041 is an equidigital number, since it uses as much as digits as its factorization.

206309041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612530.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 206309041 is about 14363.4620130385. The cubic root of 206309041 is about 590.8892470087.

The spelling of 206309041 in words is "two hundred six million, three hundred nine thousand, forty-one".