203120103 has 8 divisors (see below), whose sum is σ = 271710208. Its totient is φ = 134971704.

The previous prime is 203120087. The next prime is 203120111. The reversal of 203120103 is 301021302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203120103 - 2⁴ = 203120087 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 (203120143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109351 + ... + 111192.

It is an arithmetic number, because the mean of its divisors is an integer number (33963776).

Almost surely, 2^203120103 is an apocalyptic number.

203120103 is a deficient number, since it is larger than the sum of its proper divisors (68590105).

203120103 is a wasteful number, since it uses less digits than its factorization.

203120103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220853.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 203120103 is about 14252.0210145789. The cubic root of 203120103 is about 587.8289480005.

Adding to 203120103 its reverse (301021302), we get a palindrome (504141405).

The spelling of 203120103 in words is "two hundred three million, one hundred twenty thousand, one hundred three".