13431443 has 4 divisors (see below), whose sum is σ = 13453968. Its totient is φ = 13408920.

The previous prime is 13431433. The next prime is 13431497. The reversal of 13431443 is 34413431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34413431 = 13 ⋅2647187.

It is a cyclic number.

It is not a de Polignac number, because 13431443 - 2¹⁰ = 13430419 is a prime.

It is a super-2 number, since 2×13431443² = 360807322124498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13431403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10343 + ... + 11568.

It is an arithmetic number, because the mean of its divisors is an integer number (3363492).

Almost surely, 2^13431443 is an apocalyptic number.

13431443 is a deficient number, since it is larger than the sum of its proper divisors (22525).

13431443 is an equidigital number, since it uses as much as digits as its factorization.

13431443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22524.

The product of its digits is 1728, while the sum is 23.

The square root of 13431443 is about 3664.8933135905. The cubic root of 13431443 is about 237.7064089257.

Adding to 13431443 its reverse (34413431), we get a palindrome (47844874).

The spelling of 13431443 in words is "thirteen million, four hundred thirty-one thousand, four hundred forty-three".