13213043123 has 4 divisors (see below), whose sum is σ = 15100620720. Its totient is φ = 11325465528.

The previous prime is 13213043117. The next prime is 13213043131. The reversal of 13213043123 is 32134031231.

13213043123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13213043123 - 2¹⁸ = 13212780979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13213043113) 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 3 ways as a sum of consecutive naturals, for example, 943788788 + ... + 943788801.

It is an arithmetic number, because the mean of its divisors is an integer number (3775155180).

Almost surely, 2^13213043123 is an apocalyptic number.

13213043123 is a deficient number, since it is larger than the sum of its proper divisors (1887577597).

13213043123 is an equidigital number, since it uses as much as digits as its factorization.

13213043123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887577596.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 13213043123 its reverse (32134031231), we get a palindrome (45347074354).

The spelling of 13213043123 in words is "thirteen billion, two hundred thirteen million, forty-three thousand, one hundred twenty-three".