12315203 has 4 divisors (see below), whose sum is σ = 12499080. Its totient is φ = 12131328.

The previous prime is 12315187. The next prime is 12315209. The reversal of 12315203 is 30251321.

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 12315203 - 2⁴ = 12315187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12315209) 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, 91838 + ... + 91971.

It is an arithmetic number, because the mean of its divisors is an integer number (3124770).

Almost surely, 2^12315203 is an apocalyptic number.

12315203 is a deficient number, since it is larger than the sum of its proper divisors (183877).

12315203 is an equidigital number, since it uses as much as digits as its factorization.

12315203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183876.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 12315203 is about 3509.3023523202. The cubic root of 12315203 is about 230.9300900994.

Adding to 12315203 its reverse (30251321), we get a palindrome (42566524).

The spelling of 12315203 in words is "twelve million, three hundred fifteen thousand, two hundred three".