340406317 has 4 divisors (see below), whose sum is σ = 360430236. Its totient is φ = 320382400.

The previous prime is 340406303. The next prime is 340406357. The reversal of 340406317 is 713604043.

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

It can be written as a sum of positive squares in 2 ways, for example, as 317231721 + 23174596 = 17811^2 + 4814^2 .

It is a cyclic number.

It is not a de Polignac number, because 340406317 - 2¹¹ = 340404269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340406357) 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 3 ways as a sum of consecutive naturals, for example, 10011934 + ... + 10011967.

It is an arithmetic number, because the mean of its divisors is an integer number (90107559).

Almost surely, 2^340406317 is an apocalyptic number.

It is an amenable number.

340406317 is a deficient number, since it is larger than the sum of its proper divisors (20023919).

340406317 is a wasteful number, since it uses less digits than its factorization.

340406317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20023918.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 340406317 is about 18450.1034414444. The cubic root of 340406317 is about 698.2311236703.

The spelling of 340406317 in words is "three hundred forty million, four hundred six thousand, three hundred seventeen".