12015052431323 has 4 divisors (see below), whose sum is σ = 12022575947280. Its totient is φ = 12007528915368.

The previous prime is 12015052431289. The next prime is 12015052431329. The reversal of 12015052431323 is 32313425051021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12015052431323 - 2¹⁰ = 12015052430299 is a prime.

It is a super-2 number, since 2×12015052431323² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12015052431323.

It is not an unprimeable number, because it can be changed into a prime (12015052431329) 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, 3761755583 + ... + 3761758776.

It is an arithmetic number, because the mean of its divisors is an integer number (3005643986820).

Almost surely, 2^{12015052431323} is an apocalyptic number.

12015052431323 is a deficient number, since it is larger than the sum of its proper divisors (7523515957).

12015052431323 is an equidigital number, since it uses as much as digits as its factorization.

12015052431323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7523515956.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 12015052431323 its reverse (32313425051021), we get a palindrome (44328477482344).

The spelling of 12015052431323 in words is "twelve trillion, fifteen billion, fifty-two million, four hundred thirty-one thousand, three hundred twenty-three".