12031013122013 has 4 divisors (see below), whose sum is σ = 12032744459100. Its totient is φ = 12029281784928.

The previous prime is 12031013121983. The next prime is 12031013122039. The reversal of 12031013122013 is 31022131013021.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7058389638169 + 4972623483844 = 2656763^2 + 2229938^2 .

It is a cyclic number.

It is not a de Polignac number, because 12031013122013 - 2¹⁰ = 12031013120989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031013122813) 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, 865658120 + ... + 865672017.

It is an arithmetic number, because the mean of its divisors is an integer number (3008186114775).

Almost surely, 2^{12031013122013} is an apocalyptic number.

It is an amenable number.

12031013122013 is a deficient number, since it is larger than the sum of its proper divisors (1731337087).

12031013122013 is an equidigital number, since it uses as much as digits as its factorization.

12031013122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731337086.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12031013122013 its reverse (31022131013021), we get a palindrome (43053144135034).

The spelling of 12031013122013 in words is "twelve trillion, thirty-one billion, thirteen million, one hundred twenty-two thousand, thirteen".