230705 has 4 divisors (see below), whose sum is σ = 276852. Its totient is φ = 184560.

The previous prime is 230693. The next prime is 230719. The reversal of 230705 is 507032.

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 44944 + 185761 = 212^2 + 431^2 .

It is not a de Polignac number, because 230705 - 2⁸ = 230449 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23066 + ... + 23075.

It is an arithmetic number, because the mean of its divisors is an integer number (69213).

2²³⁰⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

230705 is a deficient number, since it is larger than the sum of its proper divisors (46147).

230705 is an equidigital number, since it uses as much as digits as its factorization.

230705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46146.

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 230705 is about 480.3176032585. The cubic root of 230705 is about 61.3317940960.

Adding to 230705 its reverse (507032), we get a palindrome (737737).

The spelling of 230705 in words is "two hundred thirty thousand, seven hundred five".