20111423103 has 6 divisors (see below), whose sum is σ = 29049833384. Its totient is φ = 13407615396.

The previous prime is 20111423071. The next prime is 20111423117. The reversal of 20111423103 is 30132411102.

It is not a de Polignac number, because 20111423103 - 2⁵ = 20111423071 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 (20111423803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117301275 + ... + 1117301292.

Almost surely, 2^20111423103 is an apocalyptic number.

20111423103 is a deficient number, since it is larger than the sum of its proper divisors (8938410281).

20111423103 is a wasteful number, since it uses less digits than its factorization.

20111423103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234602573 (or 2234602570 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20111423103 its reverse (30132411102), we get a palindrome (50243834205).

The spelling of 20111423103 in words is "twenty billion, one hundred eleven million, four hundred twenty-three thousand, one hundred three".