340404243217 has 4 divisors (see below), whose sum is σ = 340857511936. Its totient is φ = 339950974500.

The previous prime is 340404243191. The next prime is 340404243227. The reversal of 340404243217 is 712342404043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 340404243217 - 2¹⁹ = 340403718929 is a prime.

It is a super-3 number, since 3×340404243217³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340404243227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226633233 + ... + 226634734.

It is an arithmetic number, because the mean of its divisors is an integer number (85214377984).

Almost surely, 2^340404243217 is an apocalyptic number.

It is an amenable number.

340404243217 is a deficient number, since it is larger than the sum of its proper divisors (453268719).

340404243217 is an equidigital number, since it uses as much as digits as its factorization.

340404243217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453268718.

The product of its (nonzero) digits is 64512, while the sum is 34.

The spelling of 340404243217 in words is "three hundred forty billion, four hundred four million, two hundred forty-three thousand, two hundred seventeen".