11011131020 has 24 divisors (see below), whose sum is σ = 23160757200. Its totient is φ = 4397332032.

The previous prime is 11011130983. The next prime is 11011131041. The reversal of 11011131020 is 2013111011.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11011130992 and 11011131010.

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 7 ways as a sum of consecutive naturals, for example, 432335 + ... + 457094.

It is an arithmetic number, because the mean of its divisors is an integer number (965031550).

Almost surely, 2^11011131020 is an apocalyptic number.

11011131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011131020 is an abundant number, since it is smaller than the sum of its proper divisors (12149626180).

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

11011131020 is a wasteful number, since it uses less digits than its factorization.

11011131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890057 (or 890055 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 11011131020 its reverse (2013111011), we get a palindrome (13024242031).

The spelling of 11011131020 in words is "eleven billion, eleven million, one hundred thirty-one thousand, twenty".