1113131331 has 24 divisors (see below), whose sum is σ = 1791251280. Its totient is φ = 661381056.

The previous prime is 1113131323. The next prime is 1113131333. The reversal of 1113131331 is 1331313111.

It is not a de Polignac number, because 1113131331 - 2³ = 1113131323 is a prime.

It is a super-2 number, since 2×1113131331² = 2478122720107663122, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1113131333) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 160641 + ... + 167426.

It is an arithmetic number, because the mean of its divisors is an integer number (74635470).

Almost surely, 2^1113131331 is an apocalyptic number.

1113131331 is a deficient number, since it is larger than the sum of its proper divisors (678119949).

1113131331 is a wasteful number, since it uses less digits than its factorization.

1113131331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328115 (or 328112 counting only the distinct ones).

The product of its digits is 81, while the sum is 18.

The square root of 1113131331 is about 33363.6228698264. The cubic root of 1113131331 is about 1036.3715178805.

Adding to 1113131331 its reverse (1331313111), we get a palindrome (2444444442).

The spelling of 1113131331 in words is "one billion, one hundred thirteen million, one hundred thirty-one thousand, three hundred thirty-one".