12112310311331 has 4 divisors (see below), whose sum is σ = 12824799153192. Its totient is φ = 11399821469472.

The previous prime is 12112310311289. The next prime is 12112310311349. The reversal of 12112310311331 is 13311301321121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112310311331 is a prime.

It is a super-2 number, since 2×12112310311331² (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 = 12112310311297 and 12112310311306.

It is not an unprimeable number, because it can be changed into a prime (12112310311931) 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, 356244420905 + ... + 356244420938.

It is an arithmetic number, because the mean of its divisors is an integer number (3206199788298).

Almost surely, 2^{12112310311331} is an apocalyptic number.

12112310311331 is a deficient number, since it is larger than the sum of its proper divisors (712488841861).

12112310311331 is an equidigital number, since it uses as much as digits as its factorization.

12112310311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712488841860.

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

Adding to 12112310311331 its reverse (13311301321121), we get a palindrome (25423611632452).

The spelling of 12112310311331 in words is "twelve trillion, one hundred twelve billion, three hundred ten million, three hundred eleven thousand, three hundred thirty-one".