13143423123 has 28 divisors (see below), whose sum is σ = 20385674160. Its totient is φ = 8460120816.

The previous prime is 13143423119. The next prime is 13143423131. The reversal of 13143423123 is 32132434131.

It is a happy number.

13143423123 is a `hidden beast` number, since 1 + 3 + 1 + 4 + 342 + 312 + 3 = 666.

13143423123 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 13143423123 - 2² = 13143423119 is a prime.

It is a super-2 number, since 2×13143423123² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13143423113) 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 27 ways as a sum of consecutive naturals, for example, 289711 + ... + 331992.

Almost surely, 2^13143423123 is an apocalyptic number.

13143423123 is a deficient number, since it is larger than the sum of its proper divisors (7242251037).

13143423123 is an frugal number, since it uses more digits than its factorization.

13143423123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621750 (or 621735 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 13143423123 its reverse (32132434131), we get a palindrome (45275857254).

The spelling of 13143423123 in words is "thirteen billion, one hundred forty-three million, four hundred twenty-three thousand, one hundred twenty-three".