20202103 has 4 divisors (see below), whose sum is σ = 21390480. Its totient is φ = 19013728.

The previous prime is 20202097. The next prime is 20202107. The reversal of 20202103 is 30120202.

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 20202103 - 2⁵ = 20202071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20202103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202107) 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, 594163 + ... + 594196.

It is an arithmetic number, because the mean of its divisors is an integer number (5347620).

Almost surely, 2^20202103 is an apocalyptic number.

20202103 is a deficient number, since it is larger than the sum of its proper divisors (1188377).

20202103 is a wasteful number, since it uses less digits than its factorization.

20202103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188376.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20202103 is about 4494.6749604393. The cubic root of 20202103 is about 272.3530189597.

Adding to 20202103 its reverse (30120202), we get a palindrome (50322305).

The spelling of 20202103 in words is "twenty million, two hundred two thousand, one hundred three".