13820103 has 12 divisors (see below), whose sum is σ = 21777288. Its totient is φ = 8375760.

The previous prime is 13820083. The next prime is 13820111. The reversal of 13820103 is 30102831.

13820103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13820103 - 2⁸ = 13819847 is a prime.

It is a super-4 number, since 4×13820103⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13820113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69700 + ... + 69897.

It is an arithmetic number, because the mean of its divisors is an integer number (1814774).

Almost surely, 2^13820103 is an apocalyptic number.

13820103 is a deficient number, since it is larger than the sum of its proper divisors (7957185).

13820103 is a wasteful number, since it uses less digits than its factorization.

13820103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139614 (or 139611 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 13820103 is about 3717.5399123614. The cubic root of 13820103 is about 239.9774457972.

Adding to 13820103 its reverse (30102831), we get a palindrome (43922934).

The spelling of 13820103 in words is "thirteen million, eight hundred twenty thousand, one hundred three".