981191232 has 168 divisors, whose sum is σ = 3333593536. Its totient is φ = 280309248.

The previous prime is 981191221. The next prime is 981191291. The reversal of 981191232 is 232191189.

981191232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-3 number, since 3×981191232³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104358 + ... + 113370.

Almost surely, 2^981191232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981191232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1666796768).

981191232 is an abundant number, since it is smaller than the sum of its proper divisors (2352402304).

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

981191232 is an equidigital number, since it uses as much as digits as its factorization.

981191232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9047 (or 9025 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 981191232 is about 31323.9721619082. The cubic root of 981191232 is about 993.6906869547.

The spelling of 981191232 in words is "nine hundred eighty-one million, one hundred ninety-one thousand, two hundred thirty-two".