12320311429 has 4 divisors (see below), whose sum is σ = 12391527276. Its totient is φ = 12249095584.

The previous prime is 12320311403. The next prime is 12320311433. The reversal of 12320311429 is 92411302321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92411302321 = 13 ⋅7108561717.

It can be written as a sum of positive squares in 2 ways, for example, as 8081650404 + 4238661025 = 89898^2 + 65105^2 .

It is a cyclic number.

It is not a de Polignac number, because 12320311429 - 2²⁵ = 12286756997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12320311397 and 12320311406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320311229) 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, 35607664 + ... + 35608009.

It is an arithmetic number, because the mean of its divisors is an integer number (3097881819).

Almost surely, 2^12320311429 is an apocalyptic number.

It is an amenable number.

12320311429 is a deficient number, since it is larger than the sum of its proper divisors (71215847).

12320311429 is an equidigital number, since it uses as much as digits as its factorization.

12320311429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71215846.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 12320311429 in words is "twelve billion, three hundred twenty million, three hundred eleven thousand, four hundred twenty-nine".