13231231111 has 8 divisors (see below), whose sum is σ = 15214177664. Its totient is φ = 11271477240.

The previous prime is 13231231037. The next prime is 13231231129. The reversal of 13231231111 is 11113213231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13231231111 - 2¹³ = 13231222919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231231171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5796945 + ... + 5799226.

It is an arithmetic number, because the mean of its divisors is an integer number (1901772208).

Almost surely, 2^13231231111 is an apocalyptic number.

13231231111 is a deficient number, since it is larger than the sum of its proper divisors (1982946553).

13231231111 is a wasteful number, since it uses less digits than its factorization.

13231231111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11596341.

The product of its digits is 108, while the sum is 19.

Adding to 13231231111 its reverse (11113213231), we get a palindrome (24344444342).

The spelling of 13231231111 in words is "thirteen billion, two hundred thirty-one million, two hundred thirty-one thousand, one hundred eleven".