230209285 has 4 divisors (see below), whose sum is σ = 276251148. Its totient is φ = 184167424.

The previous prime is 230209271. The next prime is 230209289. The reversal of 230209285 is 582902032.

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 76895361 + 153313924 = 8769^2 + 12382^2 .

It is a cyclic number.

It is not a de Polignac number, because 230209285 - 2¹⁷ = 230078213 is a prime.

It is a super-2 number, since 2×230209285² = 105992629800422450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230209289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23020924 + ... + 23020933.

It is an arithmetic number, because the mean of its divisors is an integer number (69062787).

Almost surely, 2^230209285 is an apocalyptic number.

It is an amenable number.

230209285 is a deficient number, since it is larger than the sum of its proper divisors (46041863).

230209285 is an equidigital number, since it uses as much as digits as its factorization.

230209285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46041862.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 230209285 is about 15172.6492413158. The cubic root of 230209285 is about 612.8783479443.

The spelling of 230209285 in words is "two hundred thirty million, two hundred nine thousand, two hundred eighty-five".