20011031303 has 16 divisors (see below), whose sum is σ = 20805434496. Its totient is φ = 19232246880.

The previous prime is 20011031291. The next prime is 20011031311. The reversal of 20011031303 is 30313011002.

It is a cyclic number.

It is not a de Polignac number, because 20011031303 - 2¹⁰ = 20011030279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011031333) 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 15 ways as a sum of consecutive naturals, for example, 2938100 + ... + 2944902.

It is an arithmetic number, because the mean of its divisors is an integer number (1300339656).

Almost surely, 2^20011031303 is an apocalyptic number.

20011031303 is a deficient number, since it is larger than the sum of its proper divisors (794403193).

20011031303 is a wasteful number, since it uses less digits than its factorization.

20011031303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7934.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 20011031303 its reverse (30313011002), we get a palindrome (50324042305).

The spelling of 20011031303 in words is "twenty billion, eleven million, thirty-one thousand, three hundred three".