13404134431 has 4 divisors (see below), whose sum is σ = 13409125632. Its totient is φ = 13399143232.

The previous prime is 13404134377. The next prime is 13404134437. The reversal of 13404134431 is 13443140431.

It is a happy number.

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 13404134431 - 2²⁷ = 13269916703 is a prime.

It is a super-2 number, since 2×13404134431² (a number of 21 digits) contains 22 as substring.

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 13404134431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13404134437) 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, 2491570 + ... + 2496943.

It is an arithmetic number, because the mean of its divisors is an integer number (3352281408).

Almost surely, 2^13404134431 is an apocalyptic number.

13404134431 is a deficient number, since it is larger than the sum of its proper divisors (4991201).

13404134431 is an equidigital number, since it uses as much as digits as its factorization.

13404134431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4991200.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 13404134431 its reverse (13443140431), we get a palindrome (26847274862).

The spelling of 13404134431 in words is "thirteen billion, four hundred four million, one hundred thirty-four thousand, four hundred thirty-one".