343280257 has 8 divisors (see below), whose sum is σ = 344838816. Its totient is φ = 341726112.

The previous prime is 343280177. The next prime is 343280261. The reversal of 343280257 is 752082343.

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 343280257 - 2¹¹ = 343278209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343287257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365893 + ... + 366829.

It is an arithmetic number, because the mean of its divisors is an integer number (43104852).

Almost surely, 2^343280257 is an apocalyptic number.

It is an amenable number.

343280257 is a deficient number, since it is larger than the sum of its proper divisors (1558559).

343280257 is an equidigital number, since it uses as much as digits as its factorization.

343280257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 343280257 is about 18527.8238603458. The cubic root of 343280257 is about 700.1905991185.

The spelling of 343280257 in words is "three hundred forty-three million, two hundred eighty thousand, two hundred fifty-seven".