206288023 has 4 divisors (see below), whose sum is σ = 206841448. Its totient is φ = 205734600.

The previous prime is 206288011. The next prime is 206288077. The reversal of 206288023 is 320882602.

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

It is a cyclic number.

It is not a de Polignac number, because 206288023 - 2⁹ = 206287511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206288323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276153 + ... + 276898.

It is an arithmetic number, because the mean of its divisors is an integer number (51710362).

Almost surely, 2^206288023 is an apocalyptic number.

206288023 is a deficient number, since it is larger than the sum of its proper divisors (553425).

206288023 is an equidigital number, since it uses as much as digits as its factorization.

206288023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553424.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 206288023 is about 14362.7303462817. The cubic root of 206288023 is about 590.8691804589.

The spelling of 206288023 in words is "two hundred six million, two hundred eighty-eight thousand, twenty-three".