11001311203 has 4 divisors (see below), whose sum is σ = 11001524248. Its totient is φ = 11001098160.

The previous prime is 11001311179. The next prime is 11001311207. The reversal of 11001311203 is 30211310011.

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

It is a cyclic number.

It is not a de Polignac number, because 11001311203 - 2¹³ = 11001303011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001311207) 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, 25375 + ... + 150487.

It is an arithmetic number, because the mean of its divisors is an integer number (2750381062).

Almost surely, 2^11001311203 is an apocalyptic number.

11001311203 is a deficient number, since it is larger than the sum of its proper divisors (213045).

11001311203 is an equidigital number, since it uses as much as digits as its factorization.

11001311203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213044.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 11001311203 its reverse (30211310011), we get a palindrome (41212621214).

The spelling of 11001311203 in words is "eleven billion, one million, three hundred eleven thousand, two hundred three".