340460521 has 2 divisors, whose sum is σ = 340460522. Its totient is φ = 340460520.

The previous prime is 340460509. The next prime is 340460557. The reversal of 340460521 is 125064043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226803600 + 113656921 = 15060^2 + 10661^2 .

It is a cyclic number.

It is not a de Polignac number, because 340460521 - 2⁵ = 340460489 is a prime.

It is not a weakly prime, because it can be changed into another prime (340463521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170230260 + 170230261.

It is an arithmetic number, because the mean of its divisors is an integer number (170230261).

Almost surely, 2^340460521 is an apocalyptic number.

It is an amenable number.

340460521 is a deficient number, since it is larger than the sum of its proper divisors (1).

340460521 is an equidigital number, since it uses as much as digits as its factorization.

340460521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 340460521 is about 18451.5723178270. The cubic root of 340460521 is about 698.2681822376.

The spelling of 340460521 in words is "three hundred forty million, four hundred sixty thousand, five hundred twenty-one".