323161 has 4 divisors (see below), whose sum is σ = 324324. Its totient is φ = 322000.

The previous prime is 323149. The next prime is 323201. The reversal of 323161 is 161323.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 197136 + 126025 = 444^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 323161 - 2⁹ = 322649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111 + ... + 811.

It is an arithmetic number, because the mean of its divisors is an integer number (81081).

2³²³¹⁶¹ is an apocalyptic number.

It is an amenable number.

323161 is a deficient number, since it is larger than the sum of its proper divisors (1163).

323161 is an equidigital number, since it uses as much as digits as its factorization.

323161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162.

The product of its digits is 108, while the sum is 16.

The square root of 323161 is about 568.4725147270. The cubic root of 323161 is about 68.6235184146.

Adding to 323161 its reverse (161323), we get a palindrome (484484).

It can be divided in two parts, 323 and 161, that multiplied together give a triangular number (52003 = T₃₂₂).

The spelling of 323161 in words is "three hundred twenty-three thousand, one hundred sixty-one".