20321003103 has 16 divisors (see below), whose sum is σ = 27255703680. Its totient is φ = 13466873376.

The previous prime is 20321003077. The next prime is 20321003141. The reversal of 20321003103 is 30130012302.

It is not a de Polignac number, because 20321003103 - 2⁵ = 20321003071 is a prime.

It is a super-2 number, since 2×20321003103² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321003903) 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, 2157801 + ... + 2167197.

It is an arithmetic number, because the mean of its divisors is an integer number (1703481480).

Almost surely, 2^20321003103 is an apocalyptic number.

20321003103 is a deficient number, since it is larger than the sum of its proper divisors (6934700577).

20321003103 is a wasteful number, since it uses less digits than its factorization.

20321003103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13606.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20321003103 its reverse (30130012302), we get a palindrome (50451015405).

The spelling of 20321003103 in words is "twenty billion, three hundred twenty-one million, three thousand, one hundred three".