340842817 has 4 divisors (see below), whose sum is σ = 389534656. Its totient is φ = 292150980.

The previous prime is 340842797. The next prime is 340842833. The reversal of 340842817 is 718248043.

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 a de Polignac number, because none of the positive numbers 2^k-340842817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340842517) 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, 24345909 + ... + 24345922.

It is an arithmetic number, because the mean of its divisors is an integer number (97383664).

Almost surely, 2^340842817 is an apocalyptic number.

It is an amenable number.

340842817 is a deficient number, since it is larger than the sum of its proper divisors (48691839).

340842817 is an equidigital number, since it uses as much as digits as its factorization.

340842817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48691838.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 340842817 is about 18461.9288537249. The cubic root of 340842817 is about 698.5294413882.

It can be divided in two parts, 3408 and 42817, that added together give a square (46225 = 215²).

The spelling of 340842817 in words is "three hundred forty million, eight hundred forty-two thousand, eight hundred seventeen".