205203023 has 4 divisors (see below), whose sum is σ = 205403088. Its totient is φ = 205002960.

The previous prime is 205203001. The next prime is 205203041. The reversal of 205203023 is 320302502.

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 205203023 - 2¹² = 205198927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205202992 and 205203010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205203083) 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, 98486 + ... + 100547.

It is an arithmetic number, because the mean of its divisors is an integer number (51350772).

Almost surely, 2^205203023 is an apocalyptic number.

205203023 is a deficient number, since it is larger than the sum of its proper divisors (200065).

205203023 is a wasteful number, since it uses less digits than its factorization.

205203023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200064.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 205203023 is about 14324.9091794678. The cubic root of 205203023 is about 589.8314399259.

Adding to 205203023 its reverse (320302502), we get a palindrome (525505525).

The spelling of 205203023 in words is "two hundred five million, two hundred three thousand, twenty-three".