340256783 has 2 divisors, whose sum is σ = 340256784. Its totient is φ = 340256782.

The previous prime is 340256743. The next prime is 340256789. The reversal of 340256783 is 387652043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340256783 - 2¹⁰ = 340255759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340256789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170128391 + 170128392.

It is an arithmetic number, because the mean of its divisors is an integer number (170128392).

Almost surely, 2^340256783 is an apocalyptic number.

340256783 is a deficient number, since it is larger than the sum of its proper divisors (1).

340256783 is an equidigital number, since it uses as much as digits as its factorization.

340256783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 340256783 is about 18446.0506071083. The cubic root of 340256783 is about 698.1288688260.

The spelling of 340256783 in words is "three hundred forty million, two hundred fifty-six thousand, seven hundred eighty-three".