340718723 has 2 divisors, whose sum is σ = 340718724. Its totient is φ = 340718722.

The previous prime is 340718717. The next prime is 340718759. The reversal of 340718723 is 327817043.

It is a weak prime.

It is an emirp because it is prime and its reverse (327817043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340718723 - 2⁸ = 340718467 is a prime.

It is not a weakly prime, because it can be changed into another prime (340718783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170359361 + 170359362.

It is an arithmetic number, because the mean of its divisors is an integer number (170359362).

Almost surely, 2^340718723 is an apocalyptic number.

340718723 is a deficient number, since it is larger than the sum of its proper divisors (1).

340718723 is an equidigital number, since it uses as much as digits as its factorization.

340718723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 340718723 is about 18458.5677396704. The cubic root of 340718723 is about 698.4446576011. Note that the first 3 decimals are identical.

The spelling of 340718723 in words is "three hundred forty million, seven hundred eighteen thousand, seven hundred twenty-three".