20211423103 has 4 divisors (see below), whose sum is σ = 20340158440. Its totient is φ = 20082687768.

The previous prime is 20211423091. The next prime is 20211423107. The reversal of 20211423103 is 30132411202.

It is a happy number.

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 20211423103 - 2²⁵ = 20177868671 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 (20211423107) 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, 64367433 + ... + 64367746.

It is an arithmetic number, because the mean of its divisors is an integer number (5085039610).

Almost surely, 2^20211423103 is an apocalyptic number.

20211423103 is a deficient number, since it is larger than the sum of its proper divisors (128735337).

20211423103 is a wasteful number, since it uses less digits than its factorization.

20211423103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128735336.

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

Adding to 20211423103 its reverse (30132411202), we get a palindrome (50343834305).

The spelling of 20211423103 in words is "twenty billion, two hundred eleven million, four hundred twenty-three thousand, one hundred three".