13340123123 has 4 divisors (see below), whose sum is σ = 13558813728. Its totient is φ = 13121432520.

The previous prime is 13340123089. The next prime is 13340123141. The reversal of 13340123123 is 32132104331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32132104331 = 3923 ⋅8190697.

It is a cyclic number.

It is not a de Polignac number, because 13340123123 - 2⁸ = 13340122867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13340123183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109345211 + ... + 109345332.

It is an arithmetic number, because the mean of its divisors is an integer number (3389703432).

Almost surely, 2^13340123123 is an apocalyptic number.

13340123123 is a deficient number, since it is larger than the sum of its proper divisors (218690605).

13340123123 is an equidigital number, since it uses as much as digits as its factorization.

13340123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218690604.

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

Adding to 13340123123 its reverse (32132104331), we get a palindrome (45472227454).

The spelling of 13340123123 in words is "thirteen billion, three hundred forty million, one hundred twenty-three thousand, one hundred twenty-three".