13143523 has 4 divisors (see below), whose sum is σ = 13391568. Its totient is φ = 12895480.

The previous prime is 13143491. The next prime is 13143539. The reversal of 13143523 is 32534131.

13143523 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, and also an emirpimes, since its reverse is a distinct semiprime: 32534131 = 7 ⋅4647733.

It is a cyclic number.

It is not a de Polignac number, because 13143523 - 2⁵ = 13143491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13143494 and 13143503.

It is not an unprimeable number, because it can be changed into a prime (13143553) 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, 123943 + ... + 124048.

It is an arithmetic number, because the mean of its divisors is an integer number (3347892).

Almost surely, 2^13143523 is an apocalyptic number.

13143523 is a deficient number, since it is larger than the sum of its proper divisors (248045).

13143523 is an equidigital number, since it uses as much as digits as its factorization.

13143523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248044.

The product of its digits is 1080, while the sum is 22.

The square root of 13143523 is about 3625.3997021018. The cubic root of 13143523 is about 235.9956130086.

Adding to 13143523 its reverse (32534131), we get a palindrome (45677654).

The spelling of 13143523 in words is "thirteen million, one hundred forty-three thousand, five hundred twenty-three".