13113025231 has 4 divisors (see below), whose sum is σ = 13116130200. Its totient is φ = 13109920264.

The previous prime is 13113025217. The next prime is 13113025241. The reversal of 13113025231 is 13252031131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13113025231 - 2¹³ = 13113017039 is a prime.

It is a super-2 number, since 2×13113025231² (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 (13113025241) 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, 1546141 + ... + 1554598.

It is an arithmetic number, because the mean of its divisors is an integer number (3279032550).

Almost surely, 2^13113025231 is an apocalyptic number.

13113025231 is a deficient number, since it is larger than the sum of its proper divisors (3104969).

13113025231 is an equidigital number, since it uses as much as digits as its factorization.

13113025231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104968.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 13113025231 its reverse (13252031131), we get a palindrome (26365056362).

The spelling of 13113025231 in words is "thirteen billion, one hundred thirteen million, twenty-five thousand, two hundred thirty-one".