203520103 has 2 divisors, whose sum is σ = 203520104. Its totient is φ = 203520102.

The previous prime is 203520101. The next prime is 203520139. The reversal of 203520103 is 301025302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203520103 - 2¹ = 203520101 is a prime.

It is a super-3 number, since 3×203520103³ (a number of 26 digits) contains 333 as substring.

Together with 203520101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203520101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101760051 + 101760052.

It is an arithmetic number, because the mean of its divisors is an integer number (101760052).

Almost surely, 2^203520103 is an apocalyptic number.

203520103 is a deficient number, since it is larger than the sum of its proper divisors (1).

203520103 is an equidigital number, since it uses as much as digits as its factorization.

203520103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 203520103 is about 14266.0472100719. The cubic root of 203520103 is about 588.2145612377.

Adding to 203520103 its reverse (301025302), we get a palindrome (504545405).

The spelling of 203520103 in words is "two hundred three million, five hundred twenty thousand, one hundred three".