12321511867931 has 32 divisors (see below), whose sum is σ = 14191175331840. Its totient is φ = 10479562790400.

The previous prime is 12321511867871. The next prime is 12321511867993. The reversal of 12321511867931 is 13976811512321.

12321511867931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12321511867931 - 2⁴² = 7923465356827 is a prime.

It is a super-2 number, since 2×12321511867931² (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 12321511867931.

It is not an unprimeable number, because it can be changed into a prime (12321511867031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1623169946 + ... + 1623177536.

It is an arithmetic number, because the mean of its divisors is an integer number (443474229120).

Almost surely, 2^{12321511867931} is an apocalyptic number.

12321511867931 is a deficient number, since it is larger than the sum of its proper divisors (1869663463909).

12321511867931 is a wasteful number, since it uses less digits than its factorization.

12321511867931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11235.

The product of its digits is 544320, while the sum is 50.

The spelling of 12321511867931 in words is "twelve trillion, three hundred twenty-one billion, five hundred eleven million, eight hundred sixty-seven thousand, nine hundred thirty-one".