20210113103 has 4 divisors (see below), whose sum is σ = 20223597000. Its totient is φ = 20196629208.

The previous prime is 20210113081. The next prime is 20210113153. The reversal of 20210113103 is 30131101202.

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 20210113103 - 2¹⁸ = 20209850959 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 (20210113153) 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, 6739700 + ... + 6742697.

It is an arithmetic number, because the mean of its divisors is an integer number (5055899250).

Almost surely, 2^20210113103 is an apocalyptic number.

20210113103 is a deficient number, since it is larger than the sum of its proper divisors (13483897).

20210113103 is a wasteful number, since it uses less digits than its factorization.

20210113103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13483896.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20210113103 its reverse (30131101202), we get a palindrome (50341214305).

The spelling of 20210113103 in words is "twenty billion, two hundred ten million, one hundred thirteen thousand, one hundred three".