2318161 has 4 divisors (see below), whose sum is σ = 2380852. Its totient is φ = 2255472.

The previous prime is 2318159. The next prime is 2318189. The reversal of 2318161 is 1618132.

2318161 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1404225 + 913936 = 1185^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 2318161 - 2¹ = 2318159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2318111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31290 + ... + 31363.

It is an arithmetic number, because the mean of its divisors is an integer number (595213).

2^2318161 is an apocalyptic number.

It is an amenable number.

2318161 is a deficient number, since it is larger than the sum of its proper divisors (62691).

2318161 is an equidigital number, since it uses as much as digits as its factorization.

2318161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62690.

The product of its digits is 288, while the sum is 22.

The square root of 2318161 is about 1522.5508201699. The cubic root of 2318161 is about 132.3471311630.

The spelling of 2318161 in words is "two million, three hundred eighteen thousand, one hundred sixty-one".