327122161 has 4 divisors (see below), whose sum is σ = 329510052. Its totient is φ = 324734272.

The previous prime is 327122153. The next prime is 327122227. The reversal of 327122161 is 161221723.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161221723 = 13 ⋅12401671.

It can be written as a sum of positive squares in 2 ways, for example, as 145950561 + 181171600 = 12081^2 + 13460^2 .

It is a cyclic number.

It is not a de Polignac number, because 327122161 - 2³ = 327122153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (327122111) 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, 1193740 + ... + 1194013.

It is an arithmetic number, because the mean of its divisors is an integer number (82377513).

Almost surely, 2^327122161 is an apocalyptic number.

It is an amenable number.

327122161 is a deficient number, since it is larger than the sum of its proper divisors (2387891).

327122161 is a wasteful number, since it uses less digits than its factorization.

327122161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387890.

The product of its digits is 1008, while the sum is 25.

The square root of 327122161 is about 18086.5187639855. The cubic root of 327122161 is about 689.0276586449.

Adding to 327122161 its reverse (161221723), we get a palindrome (488343884).

The spelling of 327122161 in words is "three hundred twenty-seven million, one hundred twenty-two thousand, one hundred sixty-one".