13111111123311 has 32 divisors (see below), whose sum is σ = 18838252339200. Its totient is φ = 8080820582400.

The previous prime is 13111111123267. The next prime is 13111111123333. The reversal of 13111111123311 is 11332111111131.

It is not a de Polignac number, because 13111111123311 - 2⁹ = 13111111122799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111111123361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2145111 + ... + 5551911.

It is an arithmetic number, because the mean of its divisors is an integer number (588695385600).

Almost surely, 2^{13111111123311} is an apocalyptic number.

13111111123311 is a deficient number, since it is larger than the sum of its proper divisors (5727141215889).

13111111123311 is a wasteful number, since it uses less digits than its factorization.

13111111123311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408159.

The product of its digits is 54, while the sum is 21.

Adding to 13111111123311 its reverse (11332111111131), we get a palindrome (24443222234442).

The spelling of 13111111123311 in words is "thirteen trillion, one hundred eleven billion, one hundred eleven million, one hundred twenty-three thousand, three hundred eleven".