13110215531 has 6 divisors (see below), whose sum is σ = 15250658940. Its totient is φ = 11237327556.

The previous prime is 13110215527. The next prime is 13110215539. The reversal of 13110215531 is 13551201131.

13110215531 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 13110215531 - 2² = 13110215527 is a prime.

It is a super-2 number, since 2×13110215531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13110215497 and 13110215506.

It is not an unprimeable number, because it can be changed into a prime (13110215539) 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 5 ways as a sum of consecutive naturals, for example, 133777661 + ... + 133777758.

It is an arithmetic number, because the mean of its divisors is an integer number (2541776490).

Almost surely, 2^13110215531 is an apocalyptic number.

13110215531 is a deficient number, since it is larger than the sum of its proper divisors (2140443409).

13110215531 is an equidigital number, since it uses as much as digits as its factorization.

13110215531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267555433 (or 267555426 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 23.

Adding to 13110215531 its reverse (13551201131), we get a palindrome (26661416662).

The spelling of 13110215531 in words is "thirteen billion, one hundred ten million, two hundred fifteen thousand, five hundred thirty-one".