123216203 has 4 divisors (see below), whose sum is σ = 134417688. Its totient is φ = 112014720.

The previous prime is 123216143. The next prime is 123216251. The reversal of 123216203 is 302612321.

It is a happy number.

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 123216203 - 2¹⁸ = 122954059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123216503) 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, 5600726 + ... + 5600747.

It is an arithmetic number, because the mean of its divisors is an integer number (33604422).

Almost surely, 2^123216203 is an apocalyptic number.

123216203 is a deficient number, since it is larger than the sum of its proper divisors (11201485).

123216203 is a wasteful number, since it uses less digits than its factorization.

123216203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11201484.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 123216203 is about 11100.2794108977. The cubic root of 123216203 is about 497.6101999090.

Adding to 123216203 its reverse (302612321), we get a palindrome (425828524).

The spelling of 123216203 in words is "one hundred twenty-three million, two hundred sixteen thousand, two hundred three".