181301 has 2 divisors, whose sum is σ = 181302. Its totient is φ = 181300.

The previous prime is 181297. The next prime is 181303. The reversal of 181301 is 103181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180625 + 676 = 425^2 + 26^2 .

It is a cyclic number.

It is not a de Polignac number, because 181301 - 2² = 181297 is a prime.

Together with 181303, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90650 + 90651.

It is an arithmetic number, because the mean of its divisors is an integer number (90651).

2¹⁸¹³⁰¹ is an apocalyptic number.

It is an amenable number.

181301 is a deficient number, since it is larger than the sum of its proper divisors (1).

181301 is an equidigital number, since it uses as much as digits as its factorization.

181301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 181301 is about 425.7945513977. The cubic root of 181301 is about 56.5978672922.

Adding to 181301 its reverse (103181), we get a palindrome (284482).

The spelling of 181301 in words is "one hundred eighty-one thousand, three hundred one".