256998341 has 2 divisors, whose sum is σ = 256998342. Its totient is φ = 256998340.

The previous prime is 256998281. The next prime is 256998361. The reversal of 256998341 is 143899652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169650625 + 87347716 = 13025^2 + 9346^2 .

It is a cyclic number.

It is not a de Polignac number, because 256998341 - 2¹⁴ = 256981957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256998361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128499170 + 128499171.

It is an arithmetic number, because the mean of its divisors is an integer number (128499171).

Almost surely, 2^256998341 is an apocalyptic number.

It is an amenable number.

256998341 is a deficient number, since it is larger than the sum of its proper divisors (1).

256998341 is an equidigital number, since it uses as much as digits as its factorization.

256998341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The square root of 256998341 is about 16031.1677990095. The cubic root of 256998341 is about 635.7847499171.

The spelling of 256998341 in words is "two hundred fifty-six million, nine hundred ninety-eight thousand, three hundred forty-one".