13112310311231 has 4 divisors (see below), whose sum is σ = 13147463958552. Its totient is φ = 13077156663912.

The previous prime is 13112310311167. The next prime is 13112310311299. The reversal of 13112310311231 is 13211301321131.

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 13112310311231 - 2⁶ = 13112310311167 is a prime.

It is a super-2 number, since 2×13112310311231² (a number of 27 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 = 13112310311197 and 13112310311206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112310301231) 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, 17576823101 + ... + 17576823846.

It is an arithmetic number, because the mean of its divisors is an integer number (3286865989638).

Almost surely, 2^{13112310311231} is an apocalyptic number.

13112310311231 is a deficient number, since it is larger than the sum of its proper divisors (35153647321).

13112310311231 is an equidigital number, since it uses as much as digits as its factorization.

13112310311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35153647320.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 13112310311231 its reverse (13211301321131), we get a palindrome (26323611632362).

The spelling of 13112310311231 in words is "thirteen trillion, one hundred twelve billion, three hundred ten million, three hundred eleven thousand, two hundred thirty-one".