206136023 has 4 divisors (see below), whose sum is σ = 210929928. Its totient is φ = 201342120.

The previous prime is 206136017. The next prime is 206136041. The reversal of 206136023 is 320631602.

206136023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 206136023 - 2²⁰ = 205087447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206136023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206136053) 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, 2396888 + ... + 2396973.

It is an arithmetic number, because the mean of its divisors is an integer number (52732482).

Almost surely, 2^206136023 is an apocalyptic number.

206136023 is a deficient number, since it is larger than the sum of its proper divisors (4793905).

206136023 is an equidigital number, since it uses as much as digits as its factorization.

206136023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4793904.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 206136023 is about 14357.4378981767. The cubic root of 206136023 is about 590.7240206607.

Adding to 206136023 its reverse (320631602), we get a palindrome (526767625).

The spelling of 206136023 in words is "two hundred six million, one hundred thirty-six thousand, twenty-three".