340404217 has 8 divisors (see below), whose sum is σ = 351852480. Its totient is φ = 329145360.

The previous prime is 340404203. The next prime is 340404227. The reversal of 340404217 is 712404043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340404217 is a prime.

It is a super-3 number, since 3×340404217³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340404191 and 340404200.

It is not an unprimeable number, because it can be changed into a prime (340404227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43693 + ... + 50890.

It is an arithmetic number, because the mean of its divisors is an integer number (43981560).

Almost surely, 2^340404217 is an apocalyptic number.

It is an amenable number.

340404217 is a deficient number, since it is larger than the sum of its proper divisors (11448263).

340404217 is an equidigital number, since it uses as much as digits as its factorization.

340404217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94703.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 340404217 is about 18450.0465311066. The cubic root of 340404217 is about 698.2296878486.

The spelling of 340404217 in words is "three hundred forty million, four hundred four thousand, two hundred seventeen".