20236103 has 4 divisors (see below), whose sum is σ = 21426480. Its totient is φ = 19045728.

The previous prime is 20236091. The next prime is 20236123. The reversal of 20236103 is 30163202.

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 20236103 - 2⁸ = 20235847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1190359 = 20236103 / (2 + 0 + 2 + 3 + 6 + 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 (20236123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595163 + ... + 595196.

It is an arithmetic number, because the mean of its divisors is an integer number (5356620).

Almost surely, 2^20236103 is an apocalyptic number.

20236103 is a deficient number, since it is larger than the sum of its proper divisors (1190377).

20236103 is a wasteful number, since it uses less digits than its factorization.

20236103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190376.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 20236103 is about 4498.4556238780. The cubic root of 20236103 is about 272.5057227427.

Adding to 20236103 its reverse (30163202), we get a palindrome (50399305).

The spelling of 20236103 in words is "twenty million, two hundred thirty-six thousand, one hundred three".