338161 has 2 divisors, whose sum is σ = 338162. Its totient is φ = 338160.

The previous prime is 338159. The next prime is 338167. The reversal of 338161 is 161833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323761 + 14400 = 569^2 + 120^2 .

It is a cyclic number.

It is not a de Polignac number, because 338161 - 2¹ = 338159 is a prime.

It is a super-2 number, since 2×338161² = 228705723842, which contains 22 as substring.

Together with 338159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (338167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169080 + 169081.

It is an arithmetic number, because the mean of its divisors is an integer number (169081).

2³³⁸¹⁶¹ is an apocalyptic number.

It is an amenable number.

338161 is a deficient number, since it is larger than the sum of its proper divisors (1).

338161 is an equidigital number, since it uses as much as digits as its factorization.

338161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

The square root of 338161 is about 581.5161218745. The cubic root of 338161 is about 69.6692560512.

Adding to 338161 its reverse (161833), we get a palindrome (499994).

The spelling of 338161 in words is "three hundred thirty-eight thousand, one hundred sixty-one".