13091223 has 8 divisors (see below), whose sum is σ = 17588736. Its totient is φ = 8660600.

The previous prime is 13091219. The next prime is 13091237. The reversal of 13091223 is 32219031.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13091223 - 2² = 13091219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13091223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13091203) 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 7 ways as a sum of consecutive naturals, for example, 16263 + ... + 17048.

It is an arithmetic number, because the mean of its divisors is an integer number (2198592).

Almost surely, 2^13091223 is an apocalyptic number.

13091223 is a deficient number, since it is larger than the sum of its proper divisors (4497513).

13091223 is a wasteful number, since it uses less digits than its factorization.

13091223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33445.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 13091223 is about 3618.1795146178. The cubic root of 13091223 is about 235.6821765524.

The spelling of 13091223 in words is "thirteen million, ninety-one thousand, two hundred twenty-three".