13512223 has 4 divisors (see below), whose sum is σ = 13702608. Its totient is φ = 13321840.

The previous prime is 13512221. The next prime is 13512253. The reversal of 13512223 is 32221531.

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 13512223 - 2¹ = 13512221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13512223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13512221) 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, 95086 + ... + 95227.

It is an arithmetic number, because the mean of its divisors is an integer number (3425652).

Almost surely, 2^13512223 is an apocalyptic number.

13512223 is a deficient number, since it is larger than the sum of its proper divisors (190385).

13512223 is an equidigital number, since it uses as much as digits as its factorization.

13512223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190384.

The product of its digits is 360, while the sum is 19.

The square root of 13512223 is about 3675.8975774632. The cubic root of 13512223 is about 238.1819983515.

Adding to 13512223 its reverse (32221531), we get a palindrome (45733754).

The spelling of 13512223 in words is "thirteen million, five hundred twelve thousand, two hundred twenty-three".