343203457 has 2 divisors, whose sum is σ = 343203458. Its totient is φ = 343203456.

The previous prime is 343203431. The next prime is 343203529. The reversal of 343203457 is 754302343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342842256 + 361201 = 18516^2 + 601^2 .

It is an emirp because it is prime and its reverse (754302343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343203457 - 2¹¹ = 343201409 is a prime.

It is a super-3 number, since 3×343203457³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (343203407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171601728 + 171601729.

It is an arithmetic number, because the mean of its divisors is an integer number (171601729).

Almost surely, 2^343203457 is an apocalyptic number.

It is an amenable number.

343203457 is a deficient number, since it is larger than the sum of its proper divisors (1).

343203457 is an equidigital number, since it uses as much as digits as its factorization.

343203457 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 343203457 is about 18525.7511858494. The cubic root of 343203457 is about 700.1383787654.

The spelling of 343203457 in words is "three hundred forty-three million, two hundred three thousand, four hundred fifty-seven".