13031040321 has 40 divisors (see below), whose sum is σ = 21007388864. Its totient is φ = 8002320480.

The previous prime is 13031040289. The next prime is 13031040353. The reversal of 13031040321 is 12304013031.

13031040321 is a `hidden beast` number, since 1 + 30 + 310 + 4 + 0 + 321 = 666.

It is an interprime number because it is at equal distance from previous prime (13031040289) and next prime (13031040353).

It is not a de Polignac number, because 13031040321 - 2⁵ = 13031040289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13031040294 and 13031040303.

It is not an unprimeable number, because it can be changed into a prime (13031040391) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 500106 + ... + 525516.

Almost surely, 2^13031040321 is an apocalyptic number.

It is an amenable number.

13031040321 is a deficient number, since it is larger than the sum of its proper divisors (7976348543).

13031040321 is a wasteful number, since it uses less digits than its factorization.

13031040321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25923 (or 25914 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13031040321 its reverse (12304013031), we get a palindrome (25335053352).

The spelling of 13031040321 in words is "thirteen billion, thirty-one million, forty thousand, three hundred twenty-one".