11103211311 has 4 divisors (see below), whose sum is σ = 14804281752. Its totient is φ = 7402140872.

The previous prime is 11103211297. The next prime is 11103211313. The reversal of 11103211311 is 11311230111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11311230111 = 3 ⋅3770410037.

It is a cyclic number.

It is not a de Polignac number, because 11103211311 - 2¹¹ = 11103209263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11103211313) 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, 1850535216 + ... + 1850535221.

It is an arithmetic number, because the mean of its divisors is an integer number (3701070438).

Almost surely, 2^11103211311 is an apocalyptic number.

11103211311 is a deficient number, since it is larger than the sum of its proper divisors (3701070441).

11103211311 is an equidigital number, since it uses as much as digits as its factorization.

11103211311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701070440.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 11103211311 its reverse (11311230111), we get a palindrome (22414441422).

The spelling of 11103211311 in words is "eleven billion, one hundred three million, two hundred eleven thousand, three hundred eleven".