343420705 has 16 divisors (see below), whose sum is σ = 434294784. Its totient is φ = 260180800.

The previous prime is 343420657. The next prime is 343420709. The reversal of 343420705 is 507024343.

It is not a de Polignac number, because 343420705 - 2⁷ = 343420577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343420709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3169 + ... + 26398.

It is an arithmetic number, because the mean of its divisors is an integer number (27143424).

Almost surely, 2^343420705 is an apocalyptic number.

It is an amenable number.

343420705 is a deficient number, since it is larger than the sum of its proper divisors (90874079).

343420705 is a wasteful number, since it uses less digits than its factorization.

343420705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29696.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 343420705 is about 18531.6136642226. The cubic root of 343420705 is about 700.2860769473.

The spelling of 343420705 in words is "three hundred forty-three million, four hundred twenty thousand, seven hundred five".