111271944 has 80 divisors (see below), whose sum is σ = 324691920. Its totient is φ = 31775520.

The previous prime is 111271931. The next prime is 111271957. The reversal of 111271944 is 449172111.

It is an interprime number because it is at equal distance from previous prime (111271931) and next prime (111271957).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 56659 + ... + 58589.

It is an arithmetic number, because the mean of its divisors is an integer number (4058649).

Almost surely, 2^111271944 is an apocalyptic number.

111271944 is a gapful number since it is divisible by the number (14) 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 111271944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162345960).

111271944 is an abundant number, since it is smaller than the sum of its proper divisors (213419976).

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

111271944 is an equidigital number, since it uses as much as digits as its factorization.

111271944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968 (or 1943 counting only the distinct ones).

The product of its digits is 2016, while the sum is 30.

The square root of 111271944 is about 10548.5517489369. The cubic root of 111271944 is about 480.9817061030.

The spelling of 111271944 in words is "one hundred eleven million, two hundred seventy-one thousand, nine hundred forty-four".