13113121311 has 24 divisors (see below), whose sum is σ = 19079523840. Its totient is φ = 8678354256.

The previous prime is 13113121289. The next prime is 13113121331. The reversal of 13113121311 is 11312131131.

It is not a de Polignac number, because 13113121311 - 2¹⁰ = 13113120287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113121331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1384530 + ... + 1393968.

It is an arithmetic number, because the mean of its divisors is an integer number (794980160).

Almost surely, 2^13113121311 is an apocalyptic number.

13113121311 is a deficient number, since it is larger than the sum of its proper divisors (5966402529).

13113121311 is a wasteful number, since it uses less digits than its factorization.

13113121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10555 (or 10552 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

Adding to 13113121311 its reverse (11312131131), we get a palindrome (24425252442).

The spelling of 13113121311 in words is "thirteen billion, one hundred thirteen million, one hundred twenty-one thousand, three hundred eleven".