13223287 has 12 divisors (see below), whose sum is σ = 16781256. Its totient is φ = 10303440.

The previous prime is 13223281. The next prime is 13223291. The reversal of 13223287 is 78232231.

It is not a de Polignac number, because 13223287 - 2¹⁹ = 12698999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11728 + ... + 12805.

It is an arithmetic number, because the mean of its divisors is an integer number (1398438).

Almost surely, 2^13223287 is an apocalyptic number.

13223287 is a deficient number, since it is larger than the sum of its proper divisors (3557969).

13223287 is a wasteful number, since it uses less digits than its factorization.

13223287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24558 (or 24551 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 13223287 is about 3636.3837806260. The cubic root of 13223287 is about 236.4720454692.

The spelling of 13223287 in words is "thirteen million, two hundred twenty-three thousand, two hundred eighty-seven".