13431697 has 4 divisors (see below), whose sum is σ = 13442560. Its totient is φ = 13420836.

The previous prime is 13431679. The next prime is 13431721. The reversal of 13431697 is 79613431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13431697 - 2⁷ = 13431569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13431667) 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, 3297 + ... + 6142.

It is an arithmetic number, because the mean of its divisors is an integer number (3360640).

Almost surely, 2^13431697 is an apocalyptic number.

It is an amenable number.

13431697 is a deficient number, since it is larger than the sum of its proper divisors (10863).

13431697 is an equidigital number, since it uses as much as digits as its factorization.

13431697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10862.

The product of its digits is 13608, while the sum is 34.

The square root of 13431697 is about 3664.9279665500. The cubic root of 13431697 is about 237.7079073263.

The spelling of 13431697 in words is "thirteen million, four hundred thirty-one thousand, six hundred ninety-seven".