12312013223 has 4 divisors (see below), whose sum is σ = 12317292888. Its totient is φ = 12306733560.

The previous prime is 12312013211. The next prime is 12312013271. The reversal of 12312013223 is 32231021321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32231021321 = 181 ⋅178071941.

It is a cyclic number.

It is not a de Polignac number, because 12312013223 - 2⁶ = 12312013159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12312013195 and 12312013204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312013283) 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, 2636333 + ... + 2640998.

It is an arithmetic number, because the mean of its divisors is an integer number (3079323222).

Almost surely, 2^12312013223 is an apocalyptic number.

12312013223 is a deficient number, since it is larger than the sum of its proper divisors (5279665).

12312013223 is an equidigital number, since it uses as much as digits as its factorization.

12312013223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5279664.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12312013223 its reverse (32231021321), we get a palindrome (44543034544).

The spelling of 12312013223 in words is "twelve billion, three hundred twelve million, thirteen thousand, two hundred twenty-three".