12423307321 has 4 divisors (see below), whose sum is σ = 12444048000. Its totient is φ = 12402566644.

The previous prime is 12423307297. The next prime is 12423307357. The reversal of 12423307321 is 12370332421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12423307321 - 2¹⁵ = 12423274553 is a prime.

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 12423307321.

It is not an unprimeable number, because it can be changed into a prime (12423307621) 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, 10369441 + ... + 10370638.

It is an arithmetic number, because the mean of its divisors is an integer number (3111012000).

Almost surely, 2^12423307321 is an apocalyptic number.

It is an amenable number.

12423307321 is a deficient number, since it is larger than the sum of its proper divisors (20740679).

12423307321 is an equidigital number, since it uses as much as digits as its factorization.

12423307321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20740678.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 12423307321 its reverse (12370332421), we get a palindrome (24793639742).

The spelling of 12423307321 in words is "twelve billion, four hundred twenty-three million, three hundred seven thousand, three hundred twenty-one".