13312227 has 4 divisors (see below), whose sum is σ = 17749640. Its totient is φ = 8874816.

The previous prime is 13312199. The next prime is 13312231. The reversal of 13312227 is 72221331.

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

It is not a de Polignac number, because 13312227 - 2¹² = 13308131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13312727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2218702 + ... + 2218707.

It is an arithmetic number, because the mean of its divisors is an integer number (4437410).

Almost surely, 2^13312227 is an apocalyptic number.

13312227 is a deficient number, since it is larger than the sum of its proper divisors (4437413).

13312227 is an equidigital number, since it uses as much as digits as its factorization.

13312227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4437412.

The product of its digits is 504, while the sum is 21.

The square root of 13312227 is about 3648.5924683362. The cubic root of 13312227 is about 237.0010325936.

Adding to 13312227 its reverse (72221331), we get a palindrome (85533558).

The spelling of 13312227 in words is "thirteen million, three hundred twelve thousand, two hundred twenty-seven".