13161 has 8 divisors (see below), whose sum is σ = 18144. Its totient is φ = 8480.

The previous prime is 13159. The next prime is 13163. The reversal of 13161 is 16131.

It is an interprime number because it is at equal distance from previous prime (13159) and next prime (13163).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13161 - 2¹ = 13159 is a prime.

It is a plaindrome in base 16.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (13163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70 + ... + 176.

It is an arithmetic number, because the mean of its divisors is an integer number (2268).

2¹³¹⁶¹ is an apocalyptic number.

It is an amenable number.

13161 is a deficient number, since it is larger than the sum of its proper divisors (4983).

13161 is a wasteful number, since it uses less digits than its factorization.

13161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151.

The product of its digits is 18, while the sum is 12.

The square root of 13161 is about 114.7214016651. The cubic root of 13161 is about 23.6100168146.

Adding to 13161 its reverse (16131), we get a palindrome (29292).

The spelling of 13161 in words is "thirteen thousand, one hundred sixty-one".