12323223231 has 16 divisors (see below), whose sum is σ = 17927096448. Its totient is φ = 7467616800.

The previous prime is 12323223223. The next prime is 12323223239. The reversal of 12323223231 is 13232232321.

It is an interprime number because it is at equal distance from previous prime (12323223223) and next prime (12323223239).

It is not a de Polignac number, because 12323223231 - 2³ = 12323223223 is a prime.

It is a super-2 number, since 2×12323223231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12323223239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279465 + ... + 320541.

It is an arithmetic number, because the mean of its divisors is an integer number (1120443528).

Almost surely, 2^12323223231 is an apocalyptic number.

12323223231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12323223231 is a deficient number, since it is larger than the sum of its proper divisors (5603873217).

12323223231 is a wasteful number, since it uses less digits than its factorization.

12323223231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50182.

The product of its digits is 2592, while the sum is 24.

Adding to 12323223231 its reverse (13232232321), we get a palindrome (25555455552).

It can be divided in two parts, 1 and 2323223231, that added together give a palindrome (2323223232).

The spelling of 12323223231 in words is "twelve billion, three hundred twenty-three million, two hundred twenty-three thousand, two hundred thirty-one".