12312223 has 8 divisors (see below), whose sum is σ = 15350400. Its totient is φ = 9593880.

The previous prime is 12312221. The next prime is 12312227. The reversal of 12312223 is 32221321.

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 12312223 - 2¹ = 12312221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12312197 and 12312206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312221) 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, 79873 + ... + 80026.

It is an arithmetic number, because the mean of its divisors is an integer number (1918800).

Almost surely, 2^12312223 is an apocalyptic number.

12312223 is a deficient number, since it is larger than the sum of its proper divisors (3038177).

12312223 is a wasteful number, since it uses less digits than its factorization.

12312223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159917.

The product of its digits is 144, while the sum is 16.

The square root of 12312223 is about 3508.8777408169. The cubic root of 12312223 is about 230.9114619808.

Adding to 12312223 its reverse (32221321), we get a palindrome (44533544).

The spelling of 12312223 in words is "twelve million, three hundred twelve thousand, two hundred twenty-three".