343023257 has 2 divisors, whose sum is σ = 343023258. Its totient is φ = 343023256.

The previous prime is 343023251. The next prime is 343023259. The reversal of 343023257 is 752320343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180741136 + 162282121 = 13444^2 + 12739^2 .

It is a cyclic number.

It is not a de Polignac number, because 343023257 - 2⁶ = 343023193 is a prime.

Together with 343023259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (343023251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171511628 + 171511629.

It is an arithmetic number, because the mean of its divisors is an integer number (171511629).

Almost surely, 2^343023257 is an apocalyptic number.

It is an amenable number.

343023257 is a deficient number, since it is larger than the sum of its proper divisors (1).

343023257 is an equidigital number, since it uses as much as digits as its factorization.

343023257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 29.

The square root of 343023257 is about 18520.8870467913. The cubic root of 343023257 is about 700.0158207309.

The spelling of 343023257 in words is "three hundred forty-three million, twenty-three thousand, two hundred fifty-seven".