20603204103 has 16 divisors (see below), whose sum is σ = 27891239040. Its totient is φ = 13525470816.

The previous prime is 20603204101. The next prime is 20603204131. The reversal of 20603204103 is 30140230602.

It is a happy number.

It is not a de Polignac number, because 20603204103 - 2¹ = 20603204101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20603204103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20603204101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573301 + ... + 608177.

It is an arithmetic number, because the mean of its divisors is an integer number (1743202440).

Almost surely, 2^20603204103 is an apocalyptic number.

20603204103 is a deficient number, since it is larger than the sum of its proper divisors (7288034937).

20603204103 is a wasteful number, since it uses less digits than its factorization.

20603204103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37886.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20603204103 its reverse (30140230602), we get a palindrome (50743434705).

The spelling of 20603204103 in words is "twenty billion, six hundred three million, two hundred four thousand, one hundred three".