109811712 has 96 divisors (see below), whose sum is σ = 298574640. Its totient is φ = 35880960.

The previous prime is 109811711. The next prime is 109811717. The reversal of 109811712 is 217118901.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×109811712² = 24117224184741888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 109811712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109811711) 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, 374638 + ... + 374930.

Almost surely, 2^109811712 is an apocalyptic number.

109811712 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 109811712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149287320).

109811712 is an abundant number, since it is smaller than the sum of its proper divisors (188762928).

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

109811712 is an equidigital number, since it uses as much as digits as its factorization.

109811712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 30.

The square root of 109811712 is about 10479.1083590160. The cubic root of 109811712 is about 478.8684456756.

The spelling of 109811712 in words is "one hundred nine million, eight hundred eleven thousand, seven hundred twelve".