340643273 has 2 divisors, whose sum is σ = 340643274. Its totient is φ = 340643272.

The previous prime is 340643249. The next prime is 340643299. The reversal of 340643273 is 372346043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304258249 + 36385024 = 17443^2 + 6032^2 .

It is a cyclic number.

It is not a de Polignac number, because 340643273 - 2²⁴ = 323866057 is a prime.

It is not a weakly prime, because it can be changed into another prime (340643213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170321636 + 170321637.

It is an arithmetic number, because the mean of its divisors is an integer number (170321637).

Almost surely, 2^340643273 is an apocalyptic number.

It is an amenable number.

340643273 is a deficient number, since it is larger than the sum of its proper divisors (1).

340643273 is an equidigital number, since it uses as much as digits as its factorization.

340643273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 32.

The square root of 340643273 is about 18456.5238601422. The cubic root of 340643273 is about 698.3930984153.

The spelling of 340643273 in words is "three hundred forty million, six hundred forty-three thousand, two hundred seventy-three".