20436103 has 2 divisors, whose sum is σ = 20436104. Its totient is φ = 20436102.

The previous prime is 20436089. The next prime is 20436107. The reversal of 20436103 is 30163402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20436103 - 2⁵ = 20436071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20436107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10218051 + 10218052.

It is an arithmetic number, because the mean of its divisors is an integer number (10218052).

Almost surely, 2^20436103 is an apocalyptic number.

20436103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20436103 is an equidigital number, since it uses as much as digits as its factorization.

20436103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20436103 is about 4520.6308188128. The cubic root of 20436103 is about 273.4005355616.

Adding to 20436103 its reverse (30163402), we get a palindrome (50599505).

The spelling of 20436103 in words is "twenty million, four hundred thirty-six thousand, one hundred three".