108638231 has 8 divisors (see below), whose sum is σ = 117373200. Its totient is φ = 99957312.

The previous prime is 108638207. The next prime is 108638237. The reversal of 108638231 is 132836801.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-108638231 is a prime.

It is a super-2 number, since 2×108638231² = 23604530469618722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108638237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9281 + ... + 17418.

It is an arithmetic number, because the mean of its divisors is an integer number (14671650).

Almost surely, 2^108638231 is an apocalyptic number.

108638231 is a deficient number, since it is larger than the sum of its proper divisors (8734969).

108638231 is a wasteful number, since it uses less digits than its factorization.

108638231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27025.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 108638231 is about 10422.9665163043. The cubic root of 108638231 is about 477.1565557545.

The spelling of 108638231 in words is "one hundred eight million, six hundred thirty-eight thousand, two hundred thirty-one".