13031023311 has 20 divisors (see below), whose sum is σ = 20611163232. Its totient is φ = 8176327488.

The previous prime is 13031023309. The next prime is 13031023331. The reversal of 13031023311 is 11332013031.

It is a happy number.

13031023311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13031023311 - 2¹ = 13031023309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031023301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4730295 + ... + 4733048.

Almost surely, 2^13031023311 is an apocalyptic number.

13031023311 is a deficient number, since it is larger than the sum of its proper divisors (7580139921).

13031023311 is an equidigital number, since it uses as much as digits as its factorization.

13031023311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9463372 (or 9463363 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 13031023311 its reverse (11332013031), we get a palindrome (24363036342).

The spelling of 13031023311 in words is "thirteen billion, thirty-one million, twenty-three thousand, three hundred eleven".