13531323 has 16 divisors (see below), whose sum is σ = 19554080. Its totient is φ = 8322912.

The previous prime is 13531319. The next prime is 13531333. The reversal of 13531323 is 32313531.

It is not a de Polignac number, because 13531323 - 2² = 13531319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13531323.

It is not an unprimeable number, because it can be changed into a prime (13531333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5565 + ... + 7617.

It is an arithmetic number, because the mean of its divisors is an integer number (1222130).

Almost surely, 2^13531323 is an apocalyptic number.

13531323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13531323 is a deficient number, since it is larger than the sum of its proper divisors (6022757).

13531323 is an equidigital number, since it uses as much as digits as its factorization.

13531323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095 (or 2069 counting only the distinct ones).

The product of its digits is 810, while the sum is 21.

The square root of 13531323 is about 3678.4946649411. The cubic root of 13531323 is about 238.2941717106.

Adding to 13531323 its reverse (32313531), we get a palindrome (45844854).

The spelling of 13531323 in words is "thirteen million, five hundred thirty-one thousand, three hundred twenty-three".