230171681 has 4 divisors (see below), whose sum is σ = 242286000. Its totient is φ = 218057364.

The previous prime is 230171609. The next prime is 230171707. The reversal of 230171681 is 186171032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230171681 is a prime.

It is a super-2 number, since 2×230171681² = 105958005468731522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (230171881) 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, 6057131 + ... + 6057168.

It is an arithmetic number, because the mean of its divisors is an integer number (60571500).

Almost surely, 2^230171681 is an apocalyptic number.

It is an amenable number.

230171681 is a deficient number, since it is larger than the sum of its proper divisors (12114319).

230171681 is a wasteful number, since it uses less digits than its factorization.

230171681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12114318.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 230171681 is about 15171.4099872095. The cubic root of 230171681 is about 612.8449755105.

The spelling of 230171681 in words is "two hundred thirty million, one hundred seventy-one thousand, six hundred eighty-one".