233217 has 6 divisors (see below), whose sum is σ = 336882. Its totient is φ = 155472.

The previous prime is 233201. The next prime is 233221. The reversal of 233217 is 712332.

It can be written as a sum of positive squares in only one way, i.e., 207936 + 25281 = 456^2 + 159^2 .

It is not a de Polignac number, because 233217 - 2⁴ = 233201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 233217.

It is not an unprimeable number, because it can be changed into a prime (233267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12948 + ... + 12965.

It is an arithmetic number, because the mean of its divisors is an integer number (56147).

2²³³²¹⁷ is an apocalyptic number.

It is an amenable number.

233217 is a deficient number, since it is larger than the sum of its proper divisors (103665).

233217 is a wasteful number, since it uses less digits than its factorization.

233217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25919 (or 25916 counting only the distinct ones).

The product of its digits is 252, while the sum is 18.

The square root of 233217 is about 482.9254600868. The cubic root of 233217 is about 61.5535919927.

Adding to 233217 its reverse (712332), we get a palindrome (945549).

It can be divided in two parts, 23 and 3217, that added together give a triangular number (3240 = T₈₀).

The spelling of 233217 in words is "two hundred thirty-three thousand, two hundred seventeen".