233165 has 4 divisors (see below), whose sum is σ = 279804. Its totient is φ = 186528.

The previous prime is 233161. The next prime is 233173. The reversal of 233165 is 561332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70756 + 162409 = 266^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 233165 - 2² = 233161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233161) 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, 23312 + ... + 23321.

It is an arithmetic number, because the mean of its divisors is an integer number (69951).

2²³³¹⁶⁵ is an apocalyptic number.

It is an amenable number.

233165 is a deficient number, since it is larger than the sum of its proper divisors (46639).

233165 is an equidigital number, since it uses as much as digits as its factorization.

233165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46638.

The product of its digits is 540, while the sum is 20.

The square root of 233165 is about 482.8716185489. The cubic root of 233165 is about 61.5490168192.

Adding to 233165 its reverse (561332), we get a palindrome (794497).

The spelling of 233165 in words is "two hundred thirty-three thousand, one hundred sixty-five".