11031203020 has 12 divisors (see below), whose sum is σ = 23165526384. Its totient is φ = 4412481200.

The previous prime is 11031203003. The next prime is 11031203039. The reversal of 11031203020 is 2030213011.

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, 275780056 + ... + 275780095.

It is an arithmetic number, because the mean of its divisors is an integer number (1930460532).

Almost surely, 2^11031203020 is an apocalyptic number.

11031203020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11031203020 is an abundant number, since it is smaller than the sum of its proper divisors (12134323364).

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

11031203020 is a wasteful number, since it uses less digits than its factorization.

11031203020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551560160 (or 551560158 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 11031203020 its reverse (2030213011), we get a palindrome (13061416031).

Subtracting from 11031203020 its reverse (2030213011), we obtain a palindrome (9000990009).

The spelling of 11031203020 in words is "eleven billion, thirty-one million, two hundred three thousand, twenty".