12303211 has 4 divisors (see below), whose sum is σ = 12511800. Its totient is φ = 12094624.

The previous prime is 12303209. The next prime is 12303217. The reversal of 12303211 is 11230321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11230321 = 47 ⋅238943.

It is a cyclic number.

It is not a de Polignac number, because 12303211 - 2¹ = 12303209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12303191 and 12303200.

It is not an unprimeable number, because it can be changed into a prime (12303217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104206 + ... + 104323.

It is an arithmetic number, because the mean of its divisors is an integer number (3127950).

Almost surely, 2^12303211 is an apocalyptic number.

12303211 is a deficient number, since it is larger than the sum of its proper divisors (208589).

12303211 is an equidigital number, since it uses as much as digits as its factorization.

12303211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208588.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12303211 is about 3507.5933344674. The cubic root of 12303211 is about 230.8551092537.

Adding to 12303211 its reverse (11230321), we get a palindrome (23533532).

The spelling of 12303211 in words is "twelve million, three hundred three thousand, two hundred eleven".