20203003213 has 4 divisors (see below), whose sum is σ = 20209567840. Its totient is φ = 20196438588.

The previous prime is 20203003141. The next prime is 20203003217. The reversal of 20203003213 is 31230030202.

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 20203003213 - 2¹⁷ = 20202872141 is a prime.

It is a super-2 number, since 2×20203003213² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203003217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3277695 + ... + 3283852.

It is an arithmetic number, because the mean of its divisors is an integer number (5052391960).

Almost surely, 2^20203003213 is an apocalyptic number.

It is an amenable number.

20203003213 is a deficient number, since it is larger than the sum of its proper divisors (6564627).

20203003213 is an equidigital number, since it uses as much as digits as its factorization.

20203003213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6564626.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20203003213 its reverse (31230030202), we get a palindrome (51433033415).

The spelling of 20203003213 in words is "twenty billion, two hundred three million, three thousand, two hundred thirteen".