11003443013 has 4 divisors (see below), whose sum is σ = 11013295020. Its totient is φ = 10993591008.

The previous prime is 11003443007. The next prime is 11003443027. The reversal of 11003443013 is 31034430011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5642713924 + 5360729089 = 75118^2 + 73217^2 .

It is a cyclic number.

It is not a de Polignac number, because 11003443013 - 2²² = 10999248709 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 (11003443063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4924328 + ... + 4926561.

It is an arithmetic number, because the mean of its divisors is an integer number (2753323755).

Almost surely, 2^11003443013 is an apocalyptic number.

It is an amenable number.

11003443013 is a deficient number, since it is larger than the sum of its proper divisors (9852007).

11003443013 is an equidigital number, since it uses as much as digits as its factorization.

11003443013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9852006.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 11003443013 its reverse (31034430011), we get a palindrome (42037873024).

The spelling of 11003443013 in words is "eleven billion, three million, four hundred forty-three thousand, thirteen".