109381216 has 24 divisors (see below), whose sum is σ = 246108240. Its totient is φ = 46877568.

The previous prime is 109381199. The next prime is 109381219. The reversal of 109381216 is 612183901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109381219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243931 + ... + 244378.

It is an arithmetic number, because the mean of its divisors is an integer number (10254510).

Almost surely, 2^109381216 is an apocalyptic number.

109381216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

109381216 is an abundant number, since it is smaller than the sum of its proper divisors (136727024).

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

109381216 is an equidigital number, since it uses as much as digits as its factorization.

109381216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488326 (or 488318 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 109381216 is about 10458.5475090951. The cubic root of 109381216 is about 478.2418551636.

The spelling of 109381216 in words is "one hundred nine million, three hundred eighty-one thousand, two hundred sixteen".