13531423 has 4 divisors (see below), whose sum is σ = 13601728. Its totient is φ = 13461120.

The previous prime is 13531409. The next prime is 13531433. The reversal of 13531423 is 32413531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32413531 = 167 ⋅194093.

It is a cyclic number.

It is not a de Polignac number, because 13531423 - 2⁵ = 13531391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13531394 and 13531403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531433) 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, 34863 + ... + 35248.

It is an arithmetic number, because the mean of its divisors is an integer number (3400432).

Almost surely, 2^13531423 is an apocalyptic number.

13531423 is a deficient number, since it is larger than the sum of its proper divisors (70305).

13531423 is an equidigital number, since it uses as much as digits as its factorization.

13531423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70304.

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

The square root of 13531423 is about 3678.5082574326. The cubic root of 13531423 is about 238.2947587278.

Adding to 13531423 its reverse (32413531), we get a palindrome (45944954).

The spelling of 13531423 in words is "thirteen million, five hundred thirty-one thousand, four hundred twenty-three".