108831132 has 72 divisors (see below), whose sum is σ = 283675392. Its totient is φ = 35162400.

The previous prime is 108831109. The next prime is 108831133. The reversal of 108831132 is 231138801.

It is a junction number, because it is equal to n+sod(n) for n = 108831096 and 108831105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108831133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221407 + ... + 221897.

It is an arithmetic number, because the mean of its divisors is an integer number (3939936).

Almost surely, 2^108831132 is an apocalyptic number.

108831132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108831132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141837696).

108831132 is an abundant number, since it is smaller than the sum of its proper divisors (174844260).

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

108831132 is a wasteful number, since it uses less digits than its factorization.

108831132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 674 counting only the distinct ones).

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

The square root of 108831132 is about 10432.2160637134. The cubic root of 108831132 is about 477.4388061526.

Adding to 108831132 its reverse (231138801), we get a palindrome (339969933).

The spelling of 108831132 in words is "one hundred eight million, eight hundred thirty-one thousand, one hundred thirty-two".