12308791321 has 4 divisors (see below), whose sum is σ = 12430660644. Its totient is φ = 12186922000.

The previous prime is 12308791289. The next prime is 12308791351. The reversal of 12308791321 is 12319780321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11206551321 + 1102240000 = 105861^2 + 33200^2 .

It is a cyclic number.

It is not a de Polignac number, because 12308791321 - 2⁵ = 12308791289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12308791351) 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, 60934510 + ... + 60934711.

It is an arithmetic number, because the mean of its divisors is an integer number (3107665161).

Almost surely, 2^12308791321 is an apocalyptic number.

It is an amenable number.

12308791321 is a deficient number, since it is larger than the sum of its proper divisors (121869323).

12308791321 is a wasteful number, since it uses less digits than its factorization.

12308791321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121869322.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 12308791321 in words is "twelve billion, three hundred eight million, seven hundred ninety-one thousand, three hundred twenty-one".