12243311 has 4 divisors (see below), whose sum is σ = 12415824. Its totient is φ = 12070800.

The previous prime is 12243289. The next prime is 12243313. The reversal of 12243311 is 11334221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12243311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12243311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243313) 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, 86150 + ... + 86291.

It is an arithmetic number, because the mean of its divisors is an integer number (3103956).

Almost surely, 2^12243311 is an apocalyptic number.

12243311 is a deficient number, since it is larger than the sum of its proper divisors (172513).

12243311 is an equidigital number, since it uses as much as digits as its factorization.

12243311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172512.

The product of its digits is 144, while the sum is 17.

The square root of 12243311 is about 3499.0442980906. The cubic root of 12243311 is about 230.4798488570.

Adding to 12243311 its reverse (11334221), we get a palindrome (23577532).

The spelling of 12243311 in words is "twelve million, two hundred forty-three thousand, three hundred eleven".