343256257 has 2 divisors, whose sum is σ = 343256258. Its totient is φ = 343256256.

The previous prime is 343256233. The next prime is 343256281. The reversal of 343256257 is 752652343.

It is a balanced prime because it is at equal distance from previous prime (343256233) and next prime (343256281).

It can be written as a sum of positive squares in only one way, i.e., 304118721 + 39137536 = 17439^2 + 6256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343256257 is a prime.

It is not a weakly prime, because it can be changed into another prime (343256657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171628128 + 171628129.

It is an arithmetic number, because the mean of its divisors is an integer number (171628129).

Almost surely, 2^343256257 is an apocalyptic number.

It is an amenable number.

343256257 is a deficient number, since it is larger than the sum of its proper divisors (1).

343256257 is an equidigital number, since it uses as much as digits as its factorization.

343256257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 37.

The square root of 343256257 is about 18527.1761744741. The cubic root of 343256257 is about 700.1742810949.

The spelling of 343256257 in words is "three hundred forty-three million, two hundred fifty-six thousand, two hundred fifty-seven".