13213243 has 8 divisors (see below), whose sum is σ = 13441680. Its totient is φ = 12986880.

The previous prime is 13213237. The next prime is 13213253. The reversal of 13213243 is 34231231.

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

It is a cyclic number.

It is not a de Polignac number, because 13213243 - 2¹⁷ = 13082171 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 13213243.

It is not an unprimeable number, because it can be changed into a prime (13213253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16983 + ... + 17743.

It is an arithmetic number, because the mean of its divisors is an integer number (1680210).

Almost surely, 2^13213243 is an apocalyptic number.

13213243 is a deficient number, since it is larger than the sum of its proper divisors (228437).

13213243 is an equidigital number, since it uses as much as digits as its factorization.

13213243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037.

The product of its digits is 432, while the sum is 19.

The square root of 13213243 is about 3635.0024759276. The cubic root of 13213243 is about 236.4121580187.

Adding to 13213243 its reverse (34231231), we get a palindrome (47444474).

It can be divided in two parts, 13213 and 243, that added together give a square (13456 = 116²).

The spelling of 13213243 in words is "thirteen million, two hundred thirteen thousand, two hundred forty-three".