231636328 has 48 divisors (see below), whose sum is σ = 551167200. Its totient is φ = 90246240.

The previous prime is 231636319. The next prime is 231636331. The reversal of 231636328 is 823636132.

231636328 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231636293 and 231636302.

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 11 ways as a sum of consecutive naturals, for example, 22548 + ... + 31171.

It is an arithmetic number, because the mean of its divisors is an integer number (11482650).

Almost surely, 2^231636328 is an apocalyptic number.

231636328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

231636328 is an abundant number, since it is smaller than the sum of its proper divisors (319530872).

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

231636328 is a wasteful number, since it uses less digits than its factorization.

231636328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53750 (or 53739 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 231636328 is about 15219.6034113902. The cubic root of 231636328 is about 614.1421295250.

The spelling of 231636328 in words is "two hundred thirty-one million, six hundred thirty-six thousand, three hundred twenty-eight".