1256347283 has 2 divisors, whose sum is σ = 1256347284. Its totient is φ = 1256347282.

The previous prime is 1256347249. The next prime is 1256347303. The reversal of 1256347283 is 3827436521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1256347283 - 2²⁴ = 1239570067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1256347283.

It is not a weakly prime, because it can be changed into another prime (1256347223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628173641 + 628173642.

It is an arithmetic number, because the mean of its divisors is an integer number (628173642).

Almost surely, 2^1256347283 is an apocalyptic number.

1256347283 is a deficient number, since it is larger than the sum of its proper divisors (1).

1256347283 is an equidigital number, since it uses as much as digits as its factorization.

1256347283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 41.

The square root of 1256347283 is about 35444.9895330779. The cubic root of 1256347283 is about 1079.0375751039.

The spelling of 1256347283 in words is "one billion, two hundred fifty-six million, three hundred forty-seven thousand, two hundred eighty-three".