13217234 has 8 divisors (see below), whose sum is σ = 20097660. Its totient is φ = 6518016.

The previous prime is 13217233. The next prime is 13217257. The reversal of 13217234 is 43271231.

It can be written as a sum of positive squares in 2 ways, for example, as 11662225 + 1555009 = 3415^2 + 1247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13217234² = 349390549221512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13217233) 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, 45119 + ... + 45410.

Almost surely, 2^13217234 is an apocalyptic number.

13217234 is a deficient number, since it is larger than the sum of its proper divisors (6880426).

13217234 is an equidigital number, since it uses as much as digits as its factorization.

13217234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90604.

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

The square root of 13217234 is about 3635.5514024698. The cubic root of 13217234 is about 236.4359580286.

Adding to 13217234 its reverse (43271231), we get a palindrome (56488465).

The spelling of 13217234 in words is "thirteen million, two hundred seventeen thousand, two hundred thirty-four".