11203311020 has 24 divisors (see below), whose sum is σ = 25665767568. Its totient is φ = 4073931200.

The previous prime is 11203311013. The next prime is 11203311037. The reversal of 11203311020 is 2011330211.

It is a junction number, because it is equal to n+sod(n) for n = 11203310986 and 11203311004.

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, 25461851 + ... + 25462290.

It is an arithmetic number, because the mean of its divisors is an integer number (1069406982).

Almost surely, 2^11203311020 is an apocalyptic number.

11203311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11203311020 is an abundant number, since it is smaller than the sum of its proper divisors (14462456548).

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

11203311020 is a wasteful number, since it uses less digits than its factorization.

11203311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50924161 (or 50924159 counting only the distinct ones).

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

Adding to 11203311020 its reverse (2011330211), we get a palindrome (13214641231).

It can be divided in two parts, 11203 and 311020, that added together give a palindrome (322223).

The spelling of 11203311020 in words is "eleven billion, two hundred three million, three hundred eleven thousand, twenty".