231085185 has 8 divisors (see below), whose sum is σ = 369736320. Its totient is φ = 123245424.

The previous prime is 231085159. The next prime is 231085189. The reversal of 231085185 is 581580132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231085185 - 2¹⁵ = 231052417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231085189) 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 7 ways as a sum of consecutive naturals, for example, 7702825 + ... + 7702854.

It is an arithmetic number, because the mean of its divisors is an integer number (46217040).

Almost surely, 2^231085185 is an apocalyptic number.

It is an amenable number.

231085185 is a deficient number, since it is larger than the sum of its proper divisors (138651135).

231085185 is a wasteful number, since it uses less digits than its factorization.

231085185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15405687.

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 231085185 is about 15201.4862760192. The cubic root of 231085185 is about 613.6546571327.

The spelling of 231085185 in words is "two hundred thirty-one million, eighty-five thousand, one hundred eighty-five".