13591223 has 4 divisors (see below), whose sum is σ = 13601280. Its totient is φ = 13581168.

The previous prime is 13591217. The next prime is 13591231. The reversal of 13591223 is 32219531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32219531 = 241 ⋅133691.

It is a cyclic number.

It is not a de Polignac number, because 13591223 - 2¹⁸ = 13329079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13591192 and 13591201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13591243) 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, 2615 + ... + 5832.

It is an arithmetic number, because the mean of its divisors is an integer number (3400320).

Almost surely, 2^13591223 is an apocalyptic number.

13591223 is a deficient number, since it is larger than the sum of its proper divisors (10057).

13591223 is an equidigital number, since it uses as much as digits as its factorization.

13591223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10056.

The product of its digits is 1620, while the sum is 26.

The square root of 13591223 is about 3686.6275917158. The cubic root of 13591223 is about 238.6452783059.

The spelling of 13591223 in words is "thirteen million, five hundred ninety-one thousand, two hundred twenty-three".