230539681 has 4 divisors (see below), whose sum is σ = 230574100. Its totient is φ = 230505264.

The previous prime is 230539667. The next prime is 230539693. The reversal of 230539681 is 186935032.

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 77176225 + 153363456 = 8785^2 + 12384^2 .

It is a cyclic number.

It is not a de Polignac number, because 230539681 - 2¹¹ = 230537633 is a prime.

It is a super-4 number, since 4×230539681⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230539681.

It is not an unprimeable number, because it can be changed into a prime (230539081) 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, 3546 + ... + 21763.

It is an arithmetic number, because the mean of its divisors is an integer number (57643525).

Almost surely, 2^230539681 is an apocalyptic number.

It is an amenable number.

230539681 is a deficient number, since it is larger than the sum of its proper divisors (34419).

230539681 is an equidigital number, since it uses as much as digits as its factorization.

230539681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34418.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 230539681 is about 15183.5332185891. The cubic root of 230539681 is about 613.1714084660.

The spelling of 230539681 in words is "two hundred thirty million, five hundred thirty-nine thousand, six hundred eighty-one".