12323320031 has 4 divisors (see below), whose sum is σ = 13443621864. Its totient is φ = 11203018200.

The previous prime is 12323319997. The next prime is 12323320039. The reversal of 12323320031 is 13002332321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13002332321 = 11 ⋅1182030211.

It is not a de Polignac number, because 12323320031 - 2¹⁰ = 12323319007 is a prime.

It is a super-2 number, since 2×12323320031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12323319985 and 12323320012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12323320039) 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, 560150900 + ... + 560150921.

It is an arithmetic number, because the mean of its divisors is an integer number (3360905466).

Almost surely, 2^12323320031 is an apocalyptic number.

12323320031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12323320031 is a deficient number, since it is larger than the sum of its proper divisors (1120301833).

12323320031 is a wasteful number, since it uses less digits than its factorization.

12323320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120301832.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 12323320031 its reverse (13002332321), we get a palindrome (25325652352).

The spelling of 12323320031 in words is "twelve billion, three hundred twenty-three million, three hundred twenty thousand, thirty-one".