23105203 has 4 divisors (see below), whose sum is σ = 25205688. Its totient is φ = 21004720.

The previous prime is 23105183. The next prime is 23105213. The reversal of 23105203 is 30250132.

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

It is not a de Polignac number, because 23105203 - 2⁹ = 23104691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23105213) 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, 1050226 + ... + 1050247.

It is an arithmetic number, because the mean of its divisors is an integer number (6301422).

Almost surely, 2^23105203 is an apocalyptic number.

23105203 is a deficient number, since it is larger than the sum of its proper divisors (2100485).

23105203 is a wasteful number, since it uses less digits than its factorization.

23105203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100484.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 23105203 is about 4806.7871806436. The cubic root of 23105203 is about 284.8196376001.

Adding to 23105203 its reverse (30250132), we get a palindrome (53355335).

Subtracting 23105203 from its reverse (30250132), we obtain a square (7144929 = 2673²).

The spelling of 23105203 in words is "twenty-three million, one hundred five thousand, two hundred three".