20143111103 has 4 divisors (see below), whose sum is σ = 20143843560. Its totient is φ = 20142378648.

The previous prime is 20143111081. The next prime is 20143111111. The reversal of 20143111103 is 30111134102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20143111103 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 (20143101103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323300 + ... + 380537.

It is an arithmetic number, because the mean of its divisors is an integer number (5035960890).

Almost surely, 2^20143111103 is an apocalyptic number.

20143111103 is a deficient number, since it is larger than the sum of its proper divisors (732457).

20143111103 is an equidigital number, since it uses as much as digits as its factorization.

20143111103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732456.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20143111103 its reverse (30111134102), we get a palindrome (50254245205).

The spelling of 20143111103 in words is "twenty billion, one hundred forty-three million, one hundred eleven thousand, one hundred three".