13013123 has 4 divisors (see below), whose sum is σ = 13139568. Its totient is φ = 12886680.

The previous prime is 13013071. The next prime is 13013129. The reversal of 13013123 is 32131031.

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 13013123 - 2⁶ = 13013059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13013098 and 13013107.

It is not an unprimeable number, because it can be changed into a prime (13013129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63068 + ... + 63273.

It is an arithmetic number, because the mean of its divisors is an integer number (3284892).

Almost surely, 2^13013123 is an apocalyptic number.

13013123 is a deficient number, since it is larger than the sum of its proper divisors (126445).

13013123 is a wasteful number, since it uses less digits than its factorization.

13013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126444.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 13013123 is about 3607.3706491016. The cubic root of 13013123 is about 235.2125615620.

Adding to 13013123 its reverse (32131031), we get a palindrome (45144154).

The spelling of 13013123 in words is "thirteen million, thirteen thousand, one hundred twenty-three".