13031101111 has 6 divisors (see below), whose sum is σ = 15158627880. Its totient is φ = 11169515196.

The previous prime is 13031101091. The next prime is 13031101157. The reversal of 13031101111 is 11110113031.

It is not a de Polignac number, because 13031101111 - 2⁷ = 13031100983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13031101091 and 13031101100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031161111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132970371 + ... + 132970468.

It is an arithmetic number, because the mean of its divisors is an integer number (2526437980).

Almost surely, 2^13031101111 is an apocalyptic number.

13031101111 is a deficient number, since it is larger than the sum of its proper divisors (2127526769).

13031101111 is an equidigital number, since it uses as much as digits as its factorization.

13031101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265940853 (or 265940846 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 13.

Adding to 13031101111 its reverse (11110113031), we get a palindrome (24141214142).

The spelling of 13031101111 in words is "thirteen billion, thirty-one million, one hundred one thousand, one hundred eleven".