12311023112231 has 16 divisors (see below), whose sum is σ = 12360434868000. Its totient is φ = 12261700284288.

The previous prime is 12311023112221. The next prime is 12311023112249. The reversal of 12311023112231 is 13221132011321.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12311023112231 is a prime.

It is a super-2 number, since 2×12311023112231² (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 = 12311023112197 and 12311023112206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311023112221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1426699025 + ... + 1426707653.

It is an arithmetic number, because the mean of its divisors is an integer number (772527179250).

Almost surely, 2^{12311023112231} is an apocalyptic number.

12311023112231 is a deficient number, since it is larger than the sum of its proper divisors (49411755769).

12311023112231 is a wasteful number, since it uses less digits than its factorization.

12311023112231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13138.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12311023112231 its reverse (13221132011321), we get a palindrome (25532155123552).

The spelling of 12311023112231 in words is "twelve trillion, three hundred eleven billion, twenty-three million, one hundred twelve thousand, two hundred thirty-one".