231135655 has 32 divisors (see below), whose sum is σ = 311351040. Its totient is φ = 163860480.

The previous prime is 231135647. The next prime is 231135679. The reversal of 231135655 is 556531132.

It is not a de Polignac number, because 231135655 - 2³ = 231135647 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 99922 + ... + 102208.

It is an arithmetic number, because the mean of its divisors is an integer number (9729720).

Almost surely, 2^231135655 is an apocalyptic number.

231135655 is a deficient number, since it is larger than the sum of its proper divisors (80215385).

231135655 is a wasteful number, since it uses less digits than its factorization.

231135655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379.

The product of its digits is 13500, while the sum is 31.

The square root of 231135655 is about 15203.1462204374. The cubic root of 231135655 is about 613.6993288210.

Adding to 231135655 its reverse (556531132), we get a palindrome (787666787).

The spelling of 231135655 in words is "two hundred thirty-one million, one hundred thirty-five thousand, six hundred fifty-five".