231813108 has 36 divisors (see below), whose sum is σ = 586666080. Its totient is φ = 77179536.

The previous prime is 231813089. The next prime is 231813137. The reversal of 231813108 is 801318132.

231813108 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

231813108 is strictly pandigital in base 9.

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, 31483 + ... + 38141.

It is an arithmetic number, because the mean of its divisors is an integer number (16296280).

Almost surely, 2^231813108 is an apocalyptic number.

It is an amenable number.

231813108 is an abundant number, since it is smaller than the sum of its proper divisors (354852972).

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

231813108 is a wasteful number, since it uses less digits than its factorization.

231813108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7636 (or 7631 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 231813108 is about 15225.4099452199. The cubic root of 231813108 is about 614.2983232726.

The spelling of 231813108 in words is "two hundred thirty-one million, eight hundred thirteen thousand, one hundred eight".