1113131020 has 12 divisors (see below), whose sum is σ = 2337575184. Its totient is φ = 445252400.

The previous prime is 1113131009. The next prime is 1113131039. The reversal of 1113131020 is 201313111.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27828256 + ... + 27828295.

It is an arithmetic number, because the mean of its divisors is an integer number (194797932).

Almost surely, 2^1113131020 is an apocalyptic number.

1113131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113131020 is an abundant number, since it is smaller than the sum of its proper divisors (1224444164).

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

1113131020 is a wasteful number, since it uses less digits than its factorization.

1113131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55656560 (or 55656558 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1113131020 is about 33363.6182090612. The cubic root of 1113131020 is about 1036.3714213626.

Adding to 1113131020 its reverse (201313111), we get a palindrome (1314444131).

The spelling of 1113131020 in words is "one billion, one hundred thirteen million, one hundred thirty-one thousand, twenty".