12004403431 has 4 divisors (see below), whose sum is σ = 12017938032. Its totient is φ = 11990868832.

The previous prime is 12004403423. The next prime is 12004403473. The reversal of 12004403431 is 13430440021.

12004403431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12004403431 - 2³ = 12004403423 is a prime.

It is a super-2 number, since 2×12004403431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12004403491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6765970 + ... + 6767743.

It is an arithmetic number, because the mean of its divisors is an integer number (3004484508).

Almost surely, 2^12004403431 is an apocalyptic number.

12004403431 is a deficient number, since it is larger than the sum of its proper divisors (13534601).

12004403431 is an equidigital number, since it uses as much as digits as its factorization.

12004403431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13534600.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12004403431 its reverse (13430440021), we get a palindrome (25434843452).

The spelling of 12004403431 in words is "twelve billion, four million, four hundred three thousand, four hundred thirty-one".