231508085 has 8 divisors (see below), whose sum is σ = 279515040. Its totient is φ = 184069584.

The previous prime is 231508063. The next prime is 231508111. The reversal of 231508085 is 580805132.

It is a happy number.

231508085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 231508085 - 2¹⁰ = 231507061 is a prime.

It is a Curzon number.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141215 + ... + 142844.

It is an arithmetic number, because the mean of its divisors is an integer number (34939380).

Almost surely, 2^231508085 is an apocalyptic number.

It is an amenable number.

231508085 is a deficient number, since it is larger than the sum of its proper divisors (48006955).

231508085 is a wasteful number, since it uses less digits than its factorization.

231508085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284227.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 231508085 is about 15215.3897419685. The cubic root of 231508085 is about 614.0287708404.

The spelling of 231508085 in words is "two hundred thirty-one million, five hundred eight thousand, eighty-five".