12031113023 has 4 divisors (see below), whose sum is σ = 12088132728. Its totient is φ = 11974093320.

The previous prime is 12031113019. The next prime is 12031113047. The reversal of 12031113023 is 32031113021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32031113021 = 47 ⋅681513043.

It is a cyclic number.

It is not a de Polignac number, because 12031113023 - 2² = 12031113019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12031112992 and 12031113010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031113013) 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, 28509536 + ... + 28509957.

It is an arithmetic number, because the mean of its divisors is an integer number (3022033182).

Almost surely, 2^12031113023 is an apocalyptic number.

12031113023 is a deficient number, since it is larger than the sum of its proper divisors (57019705).

12031113023 is an equidigital number, since it uses as much as digits as its factorization.

12031113023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57019704.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12031113023 its reverse (32031113021), we get a palindrome (44062226044).

The spelling of 12031113023 in words is "twelve billion, thirty-one million, one hundred thirteen thousand, twenty-three".