12104342431 has 4 divisors (see below), whose sum is σ = 12816362592. Its totient is φ = 11392322272.

The previous prime is 12104342389. The next prime is 12104342443. The reversal of 12104342431 is 13424340121.

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

It is a cyclic number.

It is not a de Polignac number, because 12104342431 - 2⁷ = 12104342303 is a prime.

It is a super-2 number, since 2×12104342431² (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 = 12104342396 and 12104342405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12104349431) 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, 356010055 + ... + 356010088.

It is an arithmetic number, because the mean of its divisors is an integer number (3204090648).

Almost surely, 2^12104342431 is an apocalyptic number.

12104342431 is a deficient number, since it is larger than the sum of its proper divisors (712020161).

12104342431 is an equidigital number, since it uses as much as digits as its factorization.

12104342431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712020160.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 12104342431 its reverse (13424340121), we get a palindrome (25528682552).

The spelling of 12104342431 in words is "twelve billion, one hundred four million, three hundred forty-two thousand, four hundred thirty-one".