206009133 has 32 divisors (see below), whose sum is σ = 310044672. Its totient is φ = 120585600.

The previous prime is 206009129. The next prime is 206009147. The reversal of 206009133 is 331900602.

It is not a de Polignac number, because 206009133 - 2² = 206009129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206009333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144060 + ... + 145482.

It is an arithmetic number, because the mean of its divisors is an integer number (9688896).

Almost surely, 2^206009133 is an apocalyptic number.

It is an amenable number.

206009133 is a deficient number, since it is larger than the sum of its proper divisors (104035539).

206009133 is a wasteful number, since it uses less digits than its factorization.

206009133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 206009133 is about 14353.0182540119. The cubic root of 206009133 is about 590.6027862198.

Adding to 206009133 its reverse (331900602), we get a palindrome (537909735).

The spelling of 206009133 in words is "two hundred six million, nine thousand, one hundred thirty-three".