20111031303103 has 8 divisors (see below), whose sum is σ = 22932035694288. Its totient is φ = 17472027195264.

The previous prime is 20111031303067. The next prime is 20111031303149. The reversal of 20111031303103 is 30130313011102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20111031303103 - 2¹³ = 20111031294911 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 (20111031343103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45500070601 + ... + 45500071042.

It is an arithmetic number, because the mean of its divisors is an integer number (2866504461786).

Almost surely, 2^{20111031303103} is an apocalyptic number.

20111031303103 is a deficient number, since it is larger than the sum of its proper divisors (2821004391185).

20111031303103 is a wasteful number, since it uses less digits than its factorization.

20111031303103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91000141673.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 20111031303103 its reverse (30130313011102), we get a palindrome (50241344314205).

The spelling of 20111031303103 in words is "twenty trillion, one hundred eleven billion, thirty-one million, three hundred three thousand, one hundred three".