203411343 has 4 divisors (see below), whose sum is σ = 271215128. Its totient is φ = 135607560.

The previous prime is 203411339. The next prime is 203411353. The reversal of 203411343 is 343114302.

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

It is not a de Polignac number, because 203411343 - 2² = 203411339 is a prime.

It is a super-2 number, since 2×203411343² = 82752348922127298, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203411303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33901888 + ... + 33901893.

It is an arithmetic number, because the mean of its divisors is an integer number (67803782).

Almost surely, 2^203411343 is an apocalyptic number.

203411343 is a deficient number, since it is larger than the sum of its proper divisors (67803785).

203411343 is an equidigital number, since it uses as much as digits as its factorization.

203411343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67803784.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 203411343 is about 14262.2348529254. The cubic root of 203411343 is about 588.1097630483.

Adding to 203411343 its reverse (343114302), we get a palindrome (546525645).

The spelling of 203411343 in words is "two hundred three million, four hundred eleven thousand, three hundred forty-three".