16347 is nontrivially palindromic in base 11.
It is a semiprime because it is the product of two primes.
It is a D-number.
It is an alternating number because its digits alternate between odd and even.
It is a Duffinian number.
It is a nialpdrome in base 7.
It is a congruent number.
16347 is a Friedman number, since it can be written as 4^7-31-6, using all its digits and the basic arithmetic operations.
216347 is an apocalyptic number.
16347 is an equidigital number, since it uses as much as digits as its factorization.
16347 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5452.
The square root of 16347 is about 127.8553870590. The cubic root of 16347 is about 25.3792833330.
The spelling of 16347 in words is "sixteen thousand, three hundred forty-seven".