1131338112 has 64 divisors (see below), whose sum is σ = 3019575360. Its totient is φ = 375298560.

The previous prime is 1131338093. The next prime is 1131338113. The reversal of 1131338112 is 2118331311.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131338113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74043 + ... + 88005.

It is an arithmetic number, because the mean of its divisors is an integer number (47180865).

Almost surely, 2^1131338112 is an apocalyptic number.

1131338112 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 1131338112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1509787680).

1131338112 is an abundant number, since it is smaller than the sum of its proper divisors (1888237248).

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

1131338112 is a wasteful number, since it uses less digits than its factorization.

1131338112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14191 (or 14179 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 1131338112 is about 33635.3699548556. The cubic root of 1131338112 is about 1041.9914111997.

Adding to 1131338112 its reverse (2118331311), we get a palindrome (3249669423).

The spelling of 1131338112 in words is "one billion, one hundred thirty-one million, three hundred thirty-eight thousand, one hundred twelve".