12131122031023 has 8 divisors (see below), whose sum is σ = 12150589677408. Its totient is φ = 12111662026464.

The previous prime is 12131122031011. The next prime is 12131122031159. The reversal of 12131122031023 is 32013022113121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12131122031023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12131122030985 and 12131122031003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131122041023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1271265 + ... + 5087077.

It is an arithmetic number, because the mean of its divisors is an integer number (1518823709676).

Almost surely, 2^{12131122031023} is an apocalyptic number.

12131122031023 is a deficient number, since it is larger than the sum of its proper divisors (19467646385).

12131122031023 is an equidigital number, since it uses as much as digits as its factorization.

12131122031023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3820913.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12131122031023 its reverse (32013022113121), we get a palindrome (44144144144144).

The spelling of 12131122031023 in words is "twelve trillion, one hundred thirty-one billion, one hundred twenty-two million, thirty-one thousand, twenty-three".