343421303 has 4 divisors (see below), whose sum is σ = 358352688. Its totient is φ = 328489920.

The previous prime is 343421237. The next prime is 343421321. The reversal of 343421303 is 303124343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303124343 = 79 ⋅3837017.

It is a cyclic number.

It is not a de Polignac number, because 343421303 - 2⁸ = 343421047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 14931361 = 343421303 / (3 + 4 + 3 + 4 + 2 + 1 + 3 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343423303) 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, 7465658 + ... + 7465703.

It is an arithmetic number, because the mean of its divisors is an integer number (89588172).

Almost surely, 2^343421303 is an apocalyptic number.

343421303 is a deficient number, since it is larger than the sum of its proper divisors (14931385).

343421303 is a wasteful number, since it uses less digits than its factorization.

343421303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14931384.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 343421303 is about 18531.6297988061. The cubic root of 343421303 is about 700.2864834175.

Adding to 343421303 its reverse (303124343), we get a palindrome (646545646).

The spelling of 343421303 in words is "three hundred forty-three million, four hundred twenty-one thousand, three hundred three".