343240357 has 2 divisors, whose sum is σ = 343240358. Its totient is φ = 343240356.

The previous prime is 343240343. The next prime is 343240363. The reversal of 343240357 is 753042343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184253476 + 158986881 = 13574^2 + 12609^2 .

It is a cyclic number.

It is not a de Polignac number, because 343240357 - 2¹¹ = 343238309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343240327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171620178 + 171620179.

It is an arithmetic number, because the mean of its divisors is an integer number (171620179).

Almost surely, 2^343240357 is an apocalyptic number.

It is an amenable number.

343240357 is a deficient number, since it is larger than the sum of its proper divisors (1).

343240357 is an equidigital number, since it uses as much as digits as its factorization.

343240357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 31.

The square root of 343240357 is about 18526.7470701146. The cubic root of 343240357 is about 700.1634699854.

The spelling of 343240357 in words is "three hundred forty-three million, two hundred forty thousand, three hundred fifty-seven".