13001023231 has 4 divisors (see below), whose sum is σ = 14858312272. Its totient is φ = 11143734192.

The previous prime is 13001023181. The next prime is 13001023253. The reversal of 13001023231 is 13232010031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13232010031 = 167 ⋅79233593.

It is a cyclic number.

It is not a de Polignac number, because 13001023231 - 2¹¹ = 13001021183 is a prime.

It is a super-2 number, since 2×13001023231² (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 (13001023831) 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, 928644510 + ... + 928644523.

It is an arithmetic number, because the mean of its divisors is an integer number (3714578068).

Almost surely, 2^13001023231 is an apocalyptic number.

13001023231 is a deficient number, since it is larger than the sum of its proper divisors (1857289041).

13001023231 is an equidigital number, since it uses as much as digits as its factorization.

13001023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857289040.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 13001023231 its reverse (13232010031), we get a palindrome (26233033262).

The spelling of 13001023231 in words is "thirteen billion, one million, twenty-three thousand, two hundred thirty-one".