206206113 has 16 divisors (see below), whose sum is σ = 284739840. Its totient is φ = 132649104.

The previous prime is 206206111. The next prime is 206206123. The reversal of 206206113 is 311602602.

It is a happy number.

It is not a de Polignac number, because 206206113 - 2¹ = 206206111 is a prime.

It is a super-2 number, since 2×206206113² = 85041922077137538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 206206113.

It is not an unprimeable number, because it can be changed into a prime (206206111) 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, 1078 + ... + 20336.

It is an arithmetic number, because the mean of its divisors is an integer number (17796240).

Almost surely, 2^206206113 is an apocalyptic number.

It is an amenable number.

206206113 is a deficient number, since it is larger than the sum of its proper divisors (78533727).

206206113 is a wasteful number, since it uses less digits than its factorization.

206206113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19388.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 206206113 is about 14359.8785858377. The cubic root of 206206113 is about 590.7909653804.

Adding to 206206113 its reverse (311602602), we get a palindrome (517808715).

The spelling of 206206113 in words is "two hundred six million, two hundred six thousand, one hundred thirteen".