123243203 has 4 divisors (see below), whose sum is σ = 126109368. Its totient is φ = 120377040.

The previous prime is 123243191. The next prime is 123243209. The reversal of 123243203 is 302342321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302342321 = 5443 ⋅55547.

It is a cyclic number.

It is not a de Polignac number, because 123243203 - 2⁴ = 123243187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123243209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1433018 + ... + 1433103.

It is an arithmetic number, because the mean of its divisors is an integer number (31527342).

Almost surely, 2^123243203 is an apocalyptic number.

123243203 is a deficient number, since it is larger than the sum of its proper divisors (2866165).

123243203 is an equidigital number, since it uses as much as digits as its factorization.

123243203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866164.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 123243203 is about 11101.4955298824. The cubic root of 123243203 is about 497.6465438688.

Adding to 123243203 its reverse (302342321), we get a palindrome (425585524).

The spelling of 123243203 in words is "one hundred twenty-three million, two hundred forty-three thousand, two hundred three".