203401343 has 4 divisors (see below), whose sum is σ = 204649368. Its totient is φ = 202153320.

The previous prime is 203401339. The next prime is 203401357. The reversal of 203401343 is 343104302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 203401343 - 2² = 203401339 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 (203401313) 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 3 ways as a sum of consecutive naturals, for example, 623768 + ... + 624093.

It is an arithmetic number, because the mean of its divisors is an integer number (51162342).

Almost surely, 2^203401343 is an apocalyptic number.

203401343 is a deficient number, since it is larger than the sum of its proper divisors (1248025).

203401343 is a wasteful number, since it uses less digits than its factorization.

203401343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248024.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 203401343 is about 14261.8842724235. The cubic root of 203401343 is about 588.1001254442.

Adding to 203401343 its reverse (343104302), we get a palindrome (546505645).

The spelling of 203401343 in words is "two hundred three million, four hundred one thousand, three hundred forty-three".