12403400004023 has 12 divisors (see below), whose sum is σ = 14452776209520. Its totient is φ = 10613557386432.

The previous prime is 12403400004001. The next prime is 12403400004059. The reversal of 12403400004023 is 32040000430421.

It is not a de Polignac number, because 12403400004023 - 2⁶ = 12403400003959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12403400004023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403400004223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213403163 + ... + 213461276.

It is an arithmetic number, because the mean of its divisors is an integer number (1204398017460).

Almost surely, 2^{12403400004023} is an apocalyptic number.

12403400004023 is a deficient number, since it is larger than the sum of its proper divisors (2049376205497).

12403400004023 is an equidigital number, since it uses as much as digits as its factorization.

12403400004023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426865046 (or 426865039 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 12403400004023 its reverse (32040000430421), we get a palindrome (44443400434444).

The spelling of 12403400004023 in words is "twelve trillion, four hundred three billion, four hundred million, four thousand, twenty-three".