12323201312 has 24 divisors (see below), whose sum is σ = 24387021036. Its totient is φ = 6129672192.

The previous prime is 12323201299. The next prime is 12323201339. The reversal of 12323201312 is 21310232321.

It can be written as a sum of positive squares in 2 ways, for example, as 11706374416 + 616826896 = 108196^2 + 24836^2 .

It is a super-2 number, since 2×12323201312² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991493 + ... + 1003844.

Almost surely, 2^12323201312 is an apocalyptic number.

It is an amenable number.

12323201312 is a deficient number, since it is larger than the sum of its proper divisors (12063819724).

12323201312 is a wasteful number, since it uses less digits than its factorization.

12323201312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995540 (or 1995532 counting only the distinct ones).

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

Adding to 12323201312 its reverse (21310232321), we get a palindrome (33633433633).

The spelling of 12323201312 in words is "twelve billion, three hundred twenty-three million, two hundred one thousand, three hundred twelve".