205132103 has 4 divisors (see below), whose sum is σ = 223780488. Its totient is φ = 186483720.

The previous prime is 205132087. The next prime is 205132129. The reversal of 205132103 is 301231502.

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 205132103 - 2⁴ = 205132087 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 (205137103) 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, 9324176 + ... + 9324197.

It is an arithmetic number, because the mean of its divisors is an integer number (55945122).

Almost surely, 2^205132103 is an apocalyptic number.

205132103 is a deficient number, since it is larger than the sum of its proper divisors (18648385).

205132103 is a wasteful number, since it uses less digits than its factorization.

205132103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18648384.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 205132103 is about 14322.4335571857. The cubic root of 205132103 is about 589.7634817561.

Adding to 205132103 its reverse (301231502), we get a palindrome (506363605).

The spelling of 205132103 in words is "two hundred five million, one hundred thirty-two thousand, one hundred three".