343403643 has 8 divisors (see below), whose sum is σ = 499496256. Its totient is φ = 208123400.

The previous prime is 343403617. The next prime is 343403651. The reversal of 343403643 is 346304343.

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

It is a cyclic number.

It is not a de Polignac number, because 343403643 - 2⁵ = 343403611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343403643.

It is not an unprimeable number, because it can be changed into a prime (343403653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5203053 + ... + 5203118.

It is an arithmetic number, because the mean of its divisors is an integer number (62437032).

Almost surely, 2^343403643 is an apocalyptic number.

343403643 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

343403643 is a deficient number, since it is larger than the sum of its proper divisors (156092613).

343403643 is a wasteful number, since it uses less digits than its factorization.

343403643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10406185.

The product of its (nonzero) digits is 31104, while the sum is 30.

The square root of 343403643 is about 18531.1533100344. The cubic root of 343403643 is about 700.2744794337.

Adding to 343403643 its reverse (346304343), we get a palindrome (689707986).

The spelling of 343403643 in words is "three hundred forty-three million, four hundred three thousand, six hundred forty-three".