231135186 has 16 divisors (see below), whose sum is σ = 462446784. Its totient is φ = 77015664.

The previous prime is 231135169. The next prime is 231135187. The reversal of 231135186 is 681531132.

It is not an unprimeable number, because it can be changed into a prime (231135187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14835 + ... + 26121.

It is an arithmetic number, because the mean of its divisors is an integer number (28902924).

Almost surely, 2^231135186 is an apocalyptic number.

231135186 is an abundant number, since it is smaller than the sum of its proper divisors (231311598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231135186 is a wasteful number, since it uses less digits than its factorization.

231135186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14705.

The product of its digits is 4320, while the sum is 30.

The square root of 231135186 is about 15203.1307959907. The cubic root of 231135186 is about 613.6989137326.

The spelling of 231135186 in words is "two hundred thirty-one million, one hundred thirty-five thousand, one hundred eighty-six".