340442215 has 16 divisors (see below), whose sum is σ = 413716896. Its totient is φ = 268912000.

The previous prime is 340442129. The next prime is 340442227. The reversal of 340442215 is 512244043.

It is a happy number.

It is not a de Polignac number, because 340442215 - 2⁷ = 340442087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340442215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247269 + ... + 248641.

It is an arithmetic number, because the mean of its divisors is an integer number (25857306).

Almost surely, 2^340442215 is an apocalyptic number.

340442215 is a deficient number, since it is larger than the sum of its proper divisors (73274681).

340442215 is a wasteful number, since it uses less digits than its factorization.

340442215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 340442215 is about 18451.0762558719. The cubic root of 340442215 is about 698.2556671043.

Adding to 340442215 its reverse (512244043), we get a palindrome (852686258).

The spelling of 340442215 in words is "three hundred forty million, four hundred forty-two thousand, two hundred fifteen".