12321531043 has 8 divisors (see below), whose sum is σ = 12890311200. Its totient is φ = 11755506048.

The previous prime is 12321531037. The next prime is 12321531073. The reversal of 12321531043 is 34013512321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12321531043 is a prime.

It is a super-2 number, since 2×12321531043² (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 = 12321530999 and 12321531017.

It is not an unprimeable number, because it can be changed into a prime (12321531073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679638 + ... + 697531.

It is an arithmetic number, because the mean of its divisors is an integer number (1611288900).

Almost surely, 2^12321531043 is an apocalyptic number.

12321531043 is a deficient number, since it is larger than the sum of its proper divisors (568780157).

12321531043 is a wasteful number, since it uses less digits than its factorization.

12321531043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377581.

The product of its (nonzero) digits is 2160, while the sum is 25.

The spelling of 12321531043 in words is "twelve billion, three hundred twenty-one million, five hundred thirty-one thousand, forty-three".