20106103 has 4 divisors (see below), whose sum is σ = 20239408. Its totient is φ = 19972800.

The previous prime is 20106101. The next prime is 20106109. The reversal of 20106103 is 30160102.

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 20106103 - 2¹ = 20106101 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 (20106101) 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, 66426 + ... + 66727.

It is an arithmetic number, because the mean of its divisors is an integer number (5059852).

Almost surely, 2^20106103 is an apocalyptic number.

20106103 is a deficient number, since it is larger than the sum of its proper divisors (133305).

20106103 is a wasteful number, since it uses less digits than its factorization.

20106103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133304.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 20106103 is about 4483.9829393074. The cubic root of 20106103 is about 271.9209283926.

Adding to 20106103 its reverse (30160102), we get a palindrome (50266205).

The spelling of 20106103 in words is "twenty million, one hundred six thousand, one hundred three".