206631255 has 16 divisors (see below), whose sum is σ = 330946560. Its totient is φ = 110091168.

The previous prime is 206631221. The next prime is 206631301. The reversal of 206631255 is 552136602.

206631255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206631255 - 2¹⁰ = 206630231 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9466 + ... + 22424.

It is an arithmetic number, because the mean of its divisors is an integer number (20684160).

Almost surely, 2^206631255 is an apocalyptic number.

206631255 is a deficient number, since it is larger than the sum of its proper divisors (124315305).

206631255 is a wasteful number, since it uses less digits than its factorization.

206631255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14030.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 206631255 is about 14374.6740832619. The cubic root of 206631255 is about 591.1967044589.

Adding to 206631255 its reverse (552136602), we get a palindrome (758767857).

The spelling of 206631255 in words is "two hundred six million, six hundred thirty-one thousand, two hundred fifty-five".