20043213 has 4 divisors (see below), whose sum is σ = 26724288. Its totient is φ = 13362140.

The previous prime is 20043211. The next prime is 20043223. The reversal of 20043213 is 31234002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20043213 - 2¹ = 20043211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20043192 and 20043201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3340533 + ... + 3340538.

It is an arithmetic number, because the mean of its divisors is an integer number (6681072).

Almost surely, 2^20043213 is an apocalyptic number.

It is an amenable number.

20043213 is a deficient number, since it is larger than the sum of its proper divisors (6681075).

20043213 is an equidigital number, since it uses as much as digits as its factorization.

20043213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681074.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20043213 is about 4476.9647083711. The cubic root of 20043213 is about 271.6371179089.

Adding to 20043213 its reverse (31234002), we get a palindrome (51277215).

The spelling of 20043213 in words is "twenty million, forty-three thousand, two hundred thirteen".