11131203020 has 24 divisors (see below), whose sum is σ = 26714887584. Its totient is φ = 3816412416.

The previous prime is 11131202993. The next prime is 11131203049. The reversal of 11131203020 is 2030213111.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 11131202986 and 11131203004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39754157 + ... + 39754436.

It is an arithmetic number, because the mean of its divisors is an integer number (1113120316).

Almost surely, 2^11131203020 is an apocalyptic number.

11131203020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11131203020 is an abundant number, since it is smaller than the sum of its proper divisors (15583684564).

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

11131203020 is a wasteful number, since it uses less digits than its factorization.

11131203020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79508609 (or 79508607 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 11131203020 its reverse (2030213111), we get a palindrome (13161416131).

The spelling of 11131203020 in words is "eleven billion, one hundred thirty-one million, two hundred three thousand, twenty".