11203133013 has 6 divisors (see below), whose sum is σ = 16182303254. Its totient is φ = 7468755336.

The previous prime is 11203132979. The next prime is 11203133017. The reversal of 11203133013 is 31033130211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11190043089 + 13089924 = 105783^2 + 3618^2 .

It is not a de Polignac number, because 11203133013 - 2²⁰ = 11202084437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203133017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622396270 + ... + 622396287.

Almost surely, 2^11203133013 is an apocalyptic number.

It is an amenable number.

11203133013 is a deficient number, since it is larger than the sum of its proper divisors (4979170241).

11203133013 is a wasteful number, since it uses less digits than its factorization.

11203133013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244792563 (or 1244792560 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 11203133013 its reverse (31033130211), we get a palindrome (42236263224).

The spelling of 11203133013 in words is "eleven billion, two hundred three million, one hundred thirty-three thousand, thirteen".