13220131031 has 4 divisors (see below), whose sum is σ = 13221661200. Its totient is φ = 13218600864.

The previous prime is 13220130991. The next prime is 13220131037. The reversal of 13220131031 is 13013102231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13013102231 = 109 ⋅119386259.

It is a cyclic number.

It is not a de Polignac number, because 13220131031 - 2⁶ = 13220130967 is a prime.

It is a super-2 number, since 2×13220131031² (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 (13220131037) 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, 752051 + ... + 769428.

It is an arithmetic number, because the mean of its divisors is an integer number (3305415300).

Almost surely, 2^13220131031 is an apocalyptic number.

13220131031 is a deficient number, since it is larger than the sum of its proper divisors (1530169).

13220131031 is an equidigital number, since it uses as much as digits as its factorization.

13220131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530168.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13220131031 its reverse (13013102231), we get a palindrome (26233233262).

The spelling of 13220131031 in words is "thirteen billion, two hundred twenty million, one hundred thirty-one thousand, thirty-one".