12443041431 has 12 divisors (see below), whose sum is σ = 18000481720. Its totient is φ = 8282807280.

The previous prime is 12443041409. The next prime is 12443041433. The reversal of 12443041431 is 13414034421.

12443041431 is a `hidden beast` number, since 1 + 244 + 3 + 0 + 414 + 3 + 1 = 666.

It is not a de Polignac number, because 12443041431 - 2⁹ = 12443040919 is a prime.

It is a super-2 number, since 2×12443041431² (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 = 12443041395 and 12443041404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443041433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1039861 + ... + 1051758.

Almost surely, 2^12443041431 is an apocalyptic number.

12443041431 is a deficient number, since it is larger than the sum of its proper divisors (5557440289).

12443041431 is a wasteful number, since it uses less digits than its factorization.

12443041431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092286 (or 2092283 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 12443041431 its reverse (13414034421), we get a palindrome (25857075852).

The spelling of 12443041431 in words is "twelve billion, four hundred forty-three million, forty-one thousand, four hundred thirty-one".