1331231112 has 40 divisors (see below), whose sum is σ = 3728681550. Its totient is φ = 443743488.

The previous prime is 1331231093. The next prime is 1331231123. The reversal of 1331231112 is 2111321331.

1331231112 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1331228196 + 2916 = 36486^2 + 54^2 .

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 polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1026537 + ... + 1027832.

Almost surely, 2^1331231112 is an apocalyptic number.

1331231112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1331231112 is an abundant number, since it is smaller than the sum of its proper divisors (2397450438).

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

1331231112 is a wasteful number, since it uses less digits than its factorization.

1331231112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054387 (or 2054374 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1331231112 is about 36486.0399605109. The cubic root of 1331231112 is about 1100.0636635330.

Adding to 1331231112 its reverse (2111321331), we get a palindrome (3442552443).

The spelling of 1331231112 in words is "one billion, three hundred thirty-one million, two hundred thirty-one thousand, one hundred twelve".