13123310403 has 16 divisors (see below), whose sum is σ = 20000687616. Its totient is φ = 7497811200.

The previous prime is 13123310401. The next prime is 13123310407. The reversal of 13123310403 is 30401332131.

13123310403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13123310403 - 2¹ = 13123310401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 13123310403.

It is not an unprimeable number, because it can be changed into a prime (13123310401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89875 + ... + 185267.

It is an arithmetic number, because the mean of its divisors is an integer number (1250042976).

Almost surely, 2^13123310403 is an apocalyptic number.

13123310403 is a deficient number, since it is larger than the sum of its proper divisors (6877377213).

13123310403 is an equidigital number, since it uses as much as digits as its factorization.

13123310403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101954.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13123310403 its reverse (30401332131), we get a palindrome (43524642534).

The spelling of 13123310403 in words is "thirteen billion, one hundred twenty-three million, three hundred ten thousand, four hundred three".