203103343 has 6 divisors (see below), whose sum is σ = 206491272. Its totient is φ = 199770120.

The previous prime is 203103287. The next prime is 203103359. The reversal of 203103343 is 343301302.

It is not a de Polignac number, because 203103343 - 2²¹ = 201006191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203103343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203103143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23571 + ... + 31012.

It is an arithmetic number, because the mean of its divisors is an integer number (34415212).

Almost surely, 2^203103343 is an apocalyptic number.

203103343 is a deficient number, since it is larger than the sum of its proper divisors (3387929).

203103343 is an frugal number, since it uses more digits than its factorization.

203103343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54705 (or 54644 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 203103343 is about 14251.4330156655. The cubic root of 203103343 is about 587.8127797598.

Adding to 203103343 its reverse (343301302), we get a palindrome (546404645).

It can be divided in two parts, 20310 and 3343, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 203103343 in words is "two hundred three million, one hundred three thousand, three hundred forty-three".