13123203 has 4 divisors (see below), whose sum is σ = 17497608. Its totient is φ = 8748800.

The previous prime is 13123183. The next prime is 13123207. The reversal of 13123203 is 30232131.

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 13123203 - 2⁸ = 13122947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13123207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2187198 + ... + 2187203.

It is an arithmetic number, because the mean of its divisors is an integer number (4374402).

Almost surely, 2^13123203 is an apocalyptic number.

13123203 is a deficient number, since it is larger than the sum of its proper divisors (4374405).

13123203 is an equidigital number, since it uses as much as digits as its factorization.

13123203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374404.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 13123203 is about 3622.5961684957. The cubic root of 13123203 is about 235.8739331961.

Adding to 13123203 its reverse (30232131), we get a palindrome (43355334).

The spelling of 13123203 in words is "thirteen million, one hundred twenty-three thousand, two hundred three".