206231065 has 16 divisors (see below), whose sum is σ = 260904960. Its totient is φ = 156260160.

The previous prime is 206231033. The next prime is 206231071. The reversal of 206231065 is 560132602.

It is not a de Polignac number, because 206231065 - 2⁵ = 206231033 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6870 + ... + 21439.

It is an arithmetic number, because the mean of its divisors is an integer number (16306560).

Almost surely, 2^206231065 is an apocalyptic number.

It is an amenable number.

206231065 is a deficient number, since it is larger than the sum of its proper divisors (54673895).

206231065 is a wasteful number, since it uses less digits than its factorization.

206231065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28392.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 206231065 is about 14360.7473691309. The cubic root of 206231065 is about 590.8147940008.

Adding to 206231065 its reverse (560132602), we get a palindrome (766363667).

The spelling of 206231065 in words is "two hundred six million, two hundred thirty-one thousand, sixty-five".