13531697 has 4 divisors (see below), whose sum is σ = 13591536. Its totient is φ = 13471860.

The previous prime is 13531669. The next prime is 13531703. The reversal of 13531697 is 79613531.

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.

It is a cyclic number.

It is not a de Polignac number, because 13531697 - 2⁶ = 13531633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13531607) 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, 29579 + ... + 30032.

It is an arithmetic number, because the mean of its divisors is an integer number (3397884).

Almost surely, 2^13531697 is an apocalyptic number.

It is an amenable number.

13531697 is a deficient number, since it is larger than the sum of its proper divisors (59839).

13531697 is an equidigital number, since it uses as much as digits as its factorization.

13531697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59838.

The product of its digits is 17010, while the sum is 35.

The square root of 13531697 is about 3678.5455006021. The cubic root of 13531697 is about 238.2963671402.

The spelling of 13531697 in words is "thirteen million, five hundred thirty-one thousand, six hundred ninety-seven".