12309223 has 8 divisors (see below), whose sum is σ = 12651408. Its totient is φ = 11969664.

The previous prime is 12309191. The next prime is 12309233. The reversal of 12309223 is 32290321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12309223 - 2⁵ = 12309191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12309194 and 12309203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12309233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12111 + ... + 13087.

It is an arithmetic number, because the mean of its divisors is an integer number (1581426).

Almost surely, 2^12309223 is an apocalyptic number.

12309223 is a deficient number, since it is larger than the sum of its proper divisors (342185).

12309223 is an equidigital number, since it uses as much as digits as its factorization.

12309223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 12309223 is about 3508.4502276646. The cubic root of 12309223 is about 230.8927058050.

Adding to 12309223 its reverse (32290321), we get a palindrome (44599544).

The spelling of 12309223 in words is "twelve million, three hundred nine thousand, two hundred twenty-three".