203040343 has 8 divisors (see below), whose sum is σ = 231129216. Its totient is φ = 176556600.

The previous prime is 203040317. The next prime is 203040347. The reversal of 203040343 is 343040302.

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

It is not a de Polignac number, because 203040343 - 2¹⁷ = 202909271 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 203040343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203040347) 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 in 7 ways as a sum of consecutive naturals, for example, 401013 + ... + 401518.

It is an arithmetic number, because the mean of its divisors is an integer number (28891152).

Almost surely, 2^203040343 is an apocalyptic number.

203040343 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

203040343 is a deficient number, since it is larger than the sum of its proper divisors (28088873).

203040343 is a wasteful number, since it uses less digits than its factorization.

203040343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802565.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 203040343 is about 14249.2225401950. Note that the first 3 decimals coincide. The cubic root of 203040343 is about 587.7519961965.

Adding to 203040343 its reverse (343040302), we get a palindrome (546080645).

The spelling of 203040343 in words is "two hundred three million, forty thousand, three hundred forty-three".