343358999 has 4 divisors (see below), whose sum is σ = 351344136. Its totient is φ = 335373864.

The previous prime is 343358993. The next prime is 343359031. The reversal of 343358999 is 999853343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999853343 = 7577 ⋅131959.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343358999 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 343358999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343358993) 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, 3992504 + ... + 3992589.

It is an arithmetic number, because the mean of its divisors is an integer number (87836034).

Almost surely, 2^343358999 is an apocalyptic number.

343358999 is a deficient number, since it is larger than the sum of its proper divisors (7985137).

343358999 is an equidigital number, since it uses as much as digits as its factorization.

343358999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7985136.

The product of its digits is 3149280, while the sum is 53.

The square root of 343358999 is about 18529.9487047320. The cubic root of 343358999 is about 700.2441318535.

It can be divided in two parts, 34335 and 8999, that added together give a palindrome (43334).

The spelling of 343358999 in words is "three hundred forty-three million, three hundred fifty-eight thousand, nine hundred ninety-nine".