20213312003 has 4 divisors (see below), whose sum is σ = 20225141280. Its totient is φ = 20201482728.

The previous prime is 20213311991. The next prime is 20213312027. The reversal of 20213312003 is 30021331202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20213312003 - 2¹⁰ = 20213310979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20213312083) 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, 5912075 + ... + 5915492.

It is an arithmetic number, because the mean of its divisors is an integer number (5056285320).

Almost surely, 2^20213312003 is an apocalyptic number.

20213312003 is a deficient number, since it is larger than the sum of its proper divisors (11829277).

20213312003 is a wasteful number, since it uses less digits than its factorization.

20213312003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11829276.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20213312003 its reverse (30021331202), we get a palindrome (50234643205).

The spelling of 20213312003 in words is "twenty billion, two hundred thirteen million, three hundred twelve thousand, three".