13018223 has 4 divisors (see below), whose sum is σ = 13075800. Its totient is φ = 12960648.

The previous prime is 13018219. The next prime is 13018241. The reversal of 13018223 is 32281031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13018223 - 2² = 13018219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13018195 and 13018204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13018123) 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, 28448 + ... + 28901.

It is an arithmetic number, because the mean of its divisors is an integer number (3268950).

Almost surely, 2^13018223 is an apocalyptic number.

13018223 is a deficient number, since it is larger than the sum of its proper divisors (57577).

13018223 is an equidigital number, since it uses as much as digits as its factorization.

13018223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57576.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 13018223 is about 3608.0774659090. The cubic root of 13018223 is about 235.2432850962.

Adding to 13018223 its reverse (32281031), we get a palindrome (45299254).

The spelling of 13018223 in words is "thirteen million, eighteen thousand, two hundred twenty-three".