13231031031 has 24 divisors (see below), whose sum is σ = 20364621264. Its totient is φ = 8248930560.

The previous prime is 13231030999. The next prime is 13231031057. The reversal of 13231031031 is 13013013231.

It is a happy number.

13231031031 is a `hidden beast` number, since 1 + 323 + 1 + 0 + 310 + 31 = 666.

It is not a de Polignac number, because 13231031031 - 2⁵ = 13231030999 is a prime.

It is a super-2 number, since 2×13231031031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13231030995 and 13231031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231031081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 251385 + ... + 299426.

It is an arithmetic number, because the mean of its divisors is an integer number (848525886).

Almost surely, 2^13231031031 is an apocalyptic number.

13231031031 is a deficient number, since it is larger than the sum of its proper divisors (7133590233).

13231031031 is a wasteful number, since it uses less digits than its factorization.

13231031031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550991 (or 550988 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 13231031031 its reverse (13013013231), we get a palindrome (26244044262).

The spelling of 13231031031 in words is "thirteen billion, two hundred thirty-one million, thirty-one thousand, thirty-one".