340815253 has 2 divisors, whose sum is σ = 340815254. Its totient is φ = 340815252.

The previous prime is 340815239. The next prime is 340815263. The reversal of 340815253 is 352518043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289578289 + 51236964 = 17017^2 + 7158^2 .

It is a cyclic number.

It is not a de Polignac number, because 340815253 - 2⁹ = 340814741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340815263) 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, 170407626 + 170407627.

It is an arithmetic number, because the mean of its divisors is an integer number (170407627).

Almost surely, 2^340815253 is an apocalyptic number.

It is an amenable number.

340815253 is a deficient number, since it is larger than the sum of its proper divisors (1).

340815253 is an equidigital number, since it uses as much as digits as its factorization.

340815253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 340815253 is about 18461.1823294176. The cubic root of 340815253 is about 698.5106108270.

The spelling of 340815253 in words is "three hundred forty million, eight hundred fifteen thousand, two hundred fifty-three".