340304563 has 4 divisors (see below), whose sum is σ = 340927240. Its totient is φ = 339681888.

The previous prime is 340304539. The next prime is 340304567. The reversal of 340304563 is 365403043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340304563 - 2²⁵ = 306750131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340304567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310518 + ... + 311611.

It is an arithmetic number, because the mean of its divisors is an integer number (85231810).

Almost surely, 2^340304563 is an apocalyptic number.

340304563 is a deficient number, since it is larger than the sum of its proper divisors (622677).

340304563 is an equidigital number, since it uses as much as digits as its factorization.

340304563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622676.

The product of its (nonzero) digits is 12960, while the sum is 28.

The square root of 340304563 is about 18447.3456898276. The cubic root of 340304563 is about 698.1615451631.

The spelling of 340304563 in words is "three hundred forty million, three hundred four thousand, five hundred sixty-three".