13131323 has 4 divisors (see below), whose sum is σ = 13215120. Its totient is φ = 13047528.

The previous prime is 13131319. The next prime is 13131329. The reversal of 13131323 is 32313131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32313131 = 467 ⋅69193.

It is a cyclic number.

It is not a de Polignac number, because 13131323 - 2² = 13131319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13131329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41663 + ... + 41976.

It is an arithmetic number, because the mean of its divisors is an integer number (3303780).

Almost surely, 2^13131323 is an apocalyptic number.

13131323 is a deficient number, since it is larger than the sum of its proper divisors (83797).

13131323 is an equidigital number, since it uses as much as digits as its factorization.

13131323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83796.

The product of its digits is 162, while the sum is 17.

The square root of 13131323 is about 3623.7167383779. The cubic root of 13131323 is about 235.9225722731.

Adding to 13131323 its reverse (32313131), we get a palindrome (45444454).

The spelling of 13131323 in words is "thirteen million, one hundred thirty-one thousand, three hundred twenty-three".