12031021323 has 12 divisors (see below), whose sum is σ = 17550204048. Its totient is φ = 7941267600.

The previous prime is 12031021297. The next prime is 12031021333. The reversal of 12031021323 is 32312013021.

12031021323 is a `hidden beast` number, since 12 + 0 + 310 + 21 + 323 = 666.

It is not a de Polignac number, because 12031021323 - 2¹⁴ = 12031004939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12031021296 and 12031021305.

It is not an unprimeable number, because it can be changed into a prime (12031021333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6616815 + ... + 6618632.

It is an arithmetic number, because the mean of its divisors is an integer number (1462517004).

Almost surely, 2^12031021323 is an apocalyptic number.

12031021323 is a deficient number, since it is larger than the sum of its proper divisors (5519182725).

12031021323 is a wasteful number, since it uses less digits than its factorization.

12031021323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13235554 (or 13235551 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12031021323 its reverse (32312013021), we get a palindrome (44343034344).

The spelling of 12031021323 in words is "twelve billion, thirty-one million, twenty-one thousand, three hundred twenty-three".