109531980 has 96 divisors (see below), whose sum is σ = 355622400. Its totient is φ = 27935424.

The previous prime is 109531963. The next prime is 109531987. The reversal of 109531980 is 89135901.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (109531987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8011 + ... + 16829.

It is an arithmetic number, because the mean of its divisors is an integer number (3704400).

Almost surely, 2^109531980 is an apocalyptic number.

109531980 is a gapful number since it is divisible by the number (10) 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 109531980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177811200).

109531980 is an abundant number, since it is smaller than the sum of its proper divisors (246090420).

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

109531980 is a wasteful number, since it uses less digits than its factorization.

109531980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8860 (or 8852 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 109531980 is about 10465.7527201821. The cubic root of 109531980 is about 478.4614801786.

The spelling of 109531980 in words is "one hundred nine million, five hundred thirty-one thousand, nine hundred eighty".