323761 has 3 divisors (see below), whose sum is σ = 324331.
Its totient is φ = 323192.
The previous prime is 323759. The next prime is 323767. The reversal of 323761 is 167323.
The square root of 323761 is 569.
It is a perfect power (a square), and thus also a powerful number.
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 only one way, i.e., 53361 + 270400 = 231^2 + 520^2
It is not a de Polignac number, because 323761 - 21 = 323759 is a prime.
It is a Duffinian number.
323761 is a lucky number.
It is not an unprimeable number, because it can be changed into a prime (323767) by changing a digit.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 285 + ... + 853.
2323761 is an apocalyptic number.
323761 is the 569-th square number.
323761 is the 285-th centered octagonal number.
It is an amenable number.
323761 is a deficient number, since it is larger than the sum of its proper divisors (570).
323761 is an frugal number, since it uses more digits than its factorization.
323761 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1138 (or 569 counting only the distinct ones).
The product of its digits is 756, while the sum is 22.
The cubic root of 323761 is about 68.6659623308.
The spelling of 323761 in words is "three hundred twenty-three thousand, seven hundred sixty-one".