13231131031 has 4 divisors (see below), whose sum is σ = 13254062512. Its totient is φ = 13208199552.

The previous prime is 13231130999. The next prime is 13231131047. The reversal of 13231131031 is 13013113231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13013113231 = 37 ⋅351705763.

It is a cyclic number.

It is not a de Polignac number, because 13231131031 - 2⁵ = 13231130999 is a prime.

It is a super-2 number, since 2×13231131031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13238131031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11464875 + ... + 11466028.

It is an arithmetic number, because the mean of its divisors is an integer number (3313515628).

Almost surely, 2^13231131031 is an apocalyptic number.

13231131031 is a deficient number, since it is larger than the sum of its proper divisors (22931481).

13231131031 is an equidigital number, since it uses as much as digits as its factorization.

13231131031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22931480.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 13231131031 its reverse (13013113231), we get a palindrome (26244244262).

The spelling of 13231131031 in words is "thirteen billion, two hundred thirty-one million, one hundred thirty-one thousand, thirty-one".