1111311432 has 144 divisors (see below), whose sum is σ = 3781115520. Its totient is φ = 288636480.

The previous prime is 1111311427. The next prime is 1111311451. The reversal of 1111311432 is 2341131111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 51873 + ... + 70095.

Almost surely, 2^1111311432 is an apocalyptic number.

1111311432 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 1111311432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1890557760).

1111311432 is an abundant number, since it is smaller than the sum of its proper divisors (2669804088).

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

1111311432 is a wasteful number, since it uses less digits than its factorization.

1111311432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18264 (or 18246 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1111311432 is about 33336.3380112453. The cubic root of 1111311432 is about 1035.8064092688.

Adding to 1111311432 its reverse (2341131111), we get a palindrome (3452442543).

The spelling of 1111311432 in words is "one billion, one hundred eleven million, three hundred eleven thousand, four hundred thirty-two".