343959563 has 2 divisors, whose sum is σ = 343959564. Its totient is φ = 343959562.

The previous prime is 343959547. The next prime is 343959599. The reversal of 343959563 is 365959343.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 343959563 - 2⁴ = 343959547 is a prime.

It is not a weakly prime, because it can be changed into another prime (343959523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171979781 + 171979782.

It is an arithmetic number, because the mean of its divisors is an integer number (171979782).

Almost surely, 2^343959563 is an apocalyptic number.

343959563 is a deficient number, since it is larger than the sum of its proper divisors (1).

343959563 is an equidigital number, since it uses as much as digits as its factorization.

343959563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1312200, while the sum is 47.

The square root of 343959563 is about 18546.1468504916. The cubic root of 343959563 is about 700.6521561745.

The spelling of 343959563 in words is "three hundred forty-three million, nine hundred fifty-nine thousand, five hundred sixty-three".