20032213 has 4 divisors (see below), whose sum is σ = 21086560. Its totient is φ = 18977868.

The previous prime is 20032193. The next prime is 20032237. The reversal of 20032213 is 31223002.

It is a happy number.

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 20032213 - 2⁹ = 20031701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20032193 and 20032202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032253) 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, 527145 + ... + 527182.

It is an arithmetic number, because the mean of its divisors is an integer number (5271640).

Almost surely, 2^20032213 is an apocalyptic number.

It is an amenable number.

20032213 is a deficient number, since it is larger than the sum of its proper divisors (1054347).

20032213 is a wasteful number, since it uses less digits than its factorization.

20032213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054346.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20032213 is about 4475.7360288560. The cubic root of 20032213 is about 271.5874160459.

Adding to 20032213 its reverse (31223002), we get a palindrome (51255215).

The spelling of 20032213 in words is "twenty million, thirty-two thousand, two hundred thirteen".