343641257 has 2 divisors, whose sum is σ = 343641258. Its totient is φ = 343641256.

The previous prime is 343641227. The next prime is 343641301. The reversal of 343641257 is 752146343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343138576 + 502681 = 18524^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 343641257 - 2¹⁶ = 343575721 is a prime.

It is not a weakly prime, because it can be changed into another prime (343641217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171820628 + 171820629.

It is an arithmetic number, because the mean of its divisors is an integer number (171820629).

Almost surely, 2^343641257 is an apocalyptic number.

It is an amenable number.

343641257 is a deficient number, since it is larger than the sum of its proper divisors (1).

343641257 is an equidigital number, since it uses as much as digits as its factorization.

343641257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 35.

The square root of 343641257 is about 18537.5634051512. The cubic root of 343641257 is about 700.4359576823.

The spelling of 343641257 in words is "three hundred forty-three million, six hundred forty-one thousand, two hundred fifty-seven".