326181 has 4 divisors (see below), whose sum is σ = 434912. Its totient is φ = 217452.

The previous prime is 326171. The next prime is 326189. The reversal of 326181 is 181623.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 326181 - 2⁵ = 326149 is a prime.

It is a super-2 number, since 2×326181² = 212788089522, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 326181.

It is not an unprimeable number, because it can be changed into a prime (326189) 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, 54361 + ... + 54366.

It is an arithmetic number, because the mean of its divisors is an integer number (108728).

2³²⁶¹⁸¹ is an apocalyptic number.

It is an amenable number.

326181 is a deficient number, since it is larger than the sum of its proper divisors (108731).

326181 is a wasteful number, since it uses less digits than its factorization.

326181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108730.

The product of its digits is 288, while the sum is 21.

The square root of 326181 is about 571.1225787867. The cubic root of 326181 is about 68.8366224934.

The spelling of 326181 in words is "three hundred twenty-six thousand, one hundred eighty-one".