13231313121 has 16 divisors (see below), whose sum is σ = 19082516544. Its totient is φ = 8106471744.

The previous prime is 13231313111. The next prime is 13231313203. The reversal of 13231313121 is 12131313231.

It is a happy number.

It is not a de Polignac number, because 13231313121 - 2⁵ = 13231313089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13231313111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738426 + ... + 756131.

It is an arithmetic number, because the mean of its divisors is an integer number (1192657284).

Almost surely, 2^13231313121 is an apocalyptic number.

It is an amenable number.

13231313121 is a deficient number, since it is larger than the sum of its proper divisors (5851203423).

13231313121 is a wasteful number, since it uses less digits than its factorization.

13231313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494800.

The product of its digits is 324, while the sum is 21.

Adding to 13231313121 its reverse (12131313231), we get a palindrome (25362626352).

The spelling of 13231313121 in words is "thirteen billion, two hundred thirty-one million, three hundred thirteen thousand, one hundred twenty-one".