13112230231 has 4 divisors (see below), whose sum is σ = 13116413232. Its totient is φ = 13108047232.

The previous prime is 13112230223. The next prime is 13112230249. The reversal of 13112230231 is 13203221131.

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 13112230231 - 2³ = 13112230223 is a prime.

It is a super-2 number, since 2×13112230231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13112230199 and 13112230208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112230031) 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, 2086795 + ... + 2093068.

It is an arithmetic number, because the mean of its divisors is an integer number (3279103308).

Almost surely, 2^13112230231 is an apocalyptic number.

13112230231 is a deficient number, since it is larger than the sum of its proper divisors (4183001).

13112230231 is an equidigital number, since it uses as much as digits as its factorization.

13112230231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183000.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13112230231 its reverse (13203221131), we get a palindrome (26315451362).

The spelling of 13112230231 in words is "thirteen billion, one hundred twelve million, two hundred thirty thousand, two hundred thirty-one".