109443312 has 140 divisors (see below), whose sum is σ = 347232984. Its totient is φ = 33125760.

The previous prime is 109443281. The next prime is 109443317. The reversal of 109443312 is 213344901.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109443317) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 127878 + ... + 128730.

Almost surely, 2^109443312 is an apocalyptic number.

109443312 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 109443312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173616492).

109443312 is an abundant number, since it is smaller than the sum of its proper divisors (237789672).

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

109443312 is an equidigital number, since it uses as much as digits as its factorization.

109443312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 109443312 is about 10461.5157601564. The cubic root of 109443312 is about 478.3323377571.

The spelling of 109443312 in words is "one hundred nine million, four hundred forty-three thousand, three hundred twelve".