12131313021023 has 16 divisors (see below), whose sum is σ = 14070757248576. Its totient is φ = 10243802661120.

The previous prime is 12131313021001. The next prime is 12131313021127. The reversal of 12131313021023 is 32012031313121.

It is a de Polignac number, because none of the positive numbers 2^k-12131313021023 is a prime.

It is a super-2 number, since 2×12131313021023² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12131313021023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131313021523) 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, 13479908 + ... + 14351673.

It is an arithmetic number, because the mean of its divisors is an integer number (879422328036).

Almost surely, 2^{12131313021023} is an apocalyptic number.

12131313021023 is a deficient number, since it is larger than the sum of its proper divisors (1939444227553).

12131313021023 is an equidigital number, since it uses as much as digits as its factorization.

12131313021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27832514.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 12131313021023 its reverse (32012031313121), we get a palindrome (44143344334144).

The spelling of 12131313021023 in words is "twelve trillion, one hundred thirty-one billion, three hundred thirteen million, twenty-one thousand, twenty-three".