11031020109 has 12 divisors (see below), whose sum is σ = 15959444800. Its totient is φ = 7342129224.

The previous prime is 11031020107. The next prime is 11031020159. The reversal of 11031020109 is 90102013011.

It is not a de Polignac number, because 11031020109 - 2¹ = 11031020107 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11031020091 and 11031020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031020107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 984469 + ... + 995610.

Almost surely, 2^11031020109 is an apocalyptic number.

It is an amenable number.

11031020109 is a deficient number, since it is larger than the sum of its proper divisors (4928424691).

11031020109 is a wasteful number, since it uses less digits than its factorization.

11031020109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980704 (or 1980701 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The spelling of 11031020109 in words is "eleven billion, thirty-one million, twenty thousand, one hundred nine".