11311003111 has 4 divisors (see below), whose sum is σ = 11332630792. Its totient is φ = 11289375432.

The previous prime is 11311003087. The next prime is 11311003129. The reversal of 11311003111 is 11130011311.

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 11311003111 - 2⁵ = 11311003079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11311003091 and 11311003100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311013111) 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, 10813056 + ... + 10814101.

It is an arithmetic number, because the mean of its divisors is an integer number (2833157698).

Almost surely, 2^11311003111 is an apocalyptic number.

11311003111 is a deficient number, since it is larger than the sum of its proper divisors (21627681).

11311003111 is an equidigital number, since it uses as much as digits as its factorization.

11311003111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21627680.

The product of its (nonzero) digits is 9, while the sum is 13.

Adding to 11311003111 its reverse (11130011311), we get a palindrome (22441014422).

The spelling of 11311003111 in words is "eleven billion, three hundred eleven million, three thousand, one hundred eleven".