11031200013 has 4 divisors (see below), whose sum is σ = 14708266688. Its totient is φ = 7354133340.

The previous prime is 11031200009. The next prime is 11031200021. The reversal of 11031200013 is 31000213011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11031200013 - 2² = 11031200009 is a prime.

It is a super-2 number, since 2×11031200013² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031200513) 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, 1838533333 + ... + 1838533338.

It is an arithmetic number, because the mean of its divisors is an integer number (3677066672).

Almost surely, 2^11031200013 is an apocalyptic number.

It is an amenable number.

11031200013 is a deficient number, since it is larger than the sum of its proper divisors (3677066675).

11031200013 is an equidigital number, since it uses as much as digits as its factorization.

11031200013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677066674.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 11031200013 its reverse (31000213011), we get a palindrome (42031413024).

The spelling of 11031200013 in words is "eleven billion, thirty-one million, two hundred thousand, thirteen".