206040103 has 4 divisors (see below), whose sum is σ = 206274328. Its totient is φ = 205805880.

The previous prime is 206040089. The next prime is 206040169. The reversal of 206040103 is 301040602.

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 206040103 - 2⁵ = 206040071 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 (206070103) 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, 115788 + ... + 117553.

It is an arithmetic number, because the mean of its divisors is an integer number (51568582).

Almost surely, 2^206040103 is an apocalyptic number.

206040103 is a deficient number, since it is larger than the sum of its proper divisors (234225).

206040103 is an equidigital number, since it uses as much as digits as its factorization.

206040103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234224.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 206040103 is about 14354.0970806248. The cubic root of 206040103 is about 590.6323804608.

Adding to 206040103 its reverse (301040602), we get a palindrome (507080705).

The spelling of 206040103 in words is "two hundred six million, forty thousand, one hundred three".