13031130021 has 48 divisors (see below), whose sum is σ = 21938079744. Its totient is φ = 6819313536.

The previous prime is 13031130017. The next prime is 13031130041. The reversal of 13031130021 is 12003113031.

It is not a de Polignac number, because 13031130021 - 2² = 13031130017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031130041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 215851 + ... + 269543.

It is an arithmetic number, because the mean of its divisors is an integer number (457043328).

Almost surely, 2^13031130021 is an apocalyptic number.

It is an amenable number.

13031130021 is a deficient number, since it is larger than the sum of its proper divisors (8906949723).

13031130021 is a wasteful number, since it uses less digits than its factorization.

13031130021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53850 (or 53843 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 13031130021 its reverse (12003113031), we get a palindrome (25034243052).

The spelling of 13031130021 in words is "thirteen billion, thirty-one million, one hundred thirty thousand, twenty-one".