13223147 has 16 divisors (see below), whose sum is σ = 15522240. Its totient is φ = 11031552.

The previous prime is 13223123. The next prime is 13223173. The reversal of 13223147 is 74132231.

It is not a de Polignac number, because 13223147 - 2⁶ = 13223083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13223347) 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 15 ways as a sum of consecutive naturals, for example, 57629 + ... + 57857.

It is an arithmetic number, because the mean of its divisors is an integer number (970140).

Almost surely, 2^13223147 is an apocalyptic number.

13223147 is a deficient number, since it is larger than the sum of its proper divisors (2299093).

13223147 is a wasteful number, since it uses less digits than its factorization.

13223147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422.

The product of its digits is 1008, while the sum is 23.

The square root of 13223147 is about 3636.3645306817. The cubic root of 13223147 is about 236.4712109262.

Adding to 13223147 its reverse (74132231), we get a palindrome (87355378).

The spelling of 13223147 in words is "thirteen million, two hundred twenty-three thousand, one hundred forty-seven".