20011344103 has 4 divisors (see below), whose sum is σ = 21064572760. Its totient is φ = 18958115448.

The previous prime is 20011344077. The next prime is 20011344131. The reversal of 20011344103 is 30144311002.

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 20011344103 - 2⁵ = 20011344071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1053228637 = 20011344103 / (2 + 0 + 0 + 1 + 1 + 3 + 4 + 4 + 1 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011344173) 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, 526614300 + ... + 526614337.

It is an arithmetic number, because the mean of its divisors is an integer number (5266143190).

Almost surely, 2^20011344103 is an apocalyptic number.

20011344103 is a deficient number, since it is larger than the sum of its proper divisors (1053228657).

20011344103 is a wasteful number, since it uses less digits than its factorization.

20011344103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053228656.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20011344103 its reverse (30144311002), we get a palindrome (50155655105).

The spelling of 20011344103 in words is "twenty billion, eleven million, three hundred forty-four thousand, one hundred three".