109851312 has 80 divisors (see below), whose sum is σ = 311765760. Its totient is φ = 33175296.

The previous prime is 109851311. The next prime is 109851319. The reversal of 109851312 is 213158901.

It is a self number, because there is not a number n which added to its sum of digits gives 109851312.

It is not an unprimeable number, because it can be changed into a prime (109851311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18358 + ... + 23594.

It is an arithmetic number, because the mean of its divisors is an integer number (3897072).

Almost surely, 2^109851312 is an apocalyptic number.

109851312 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 109851312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155882880).

109851312 is an abundant number, since it is smaller than the sum of its proper divisors (201914448).

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

109851312 is a wasteful number, since it uses less digits than its factorization.

109851312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290 (or 5284 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 109851312 is about 10480.9976624365. The cubic root of 109851312 is about 478.9260015018.

The spelling of 109851312 in words is "one hundred nine million, eight hundred fifty-one thousand, three hundred twelve".