343257 has 4 divisors (see below), whose sum is σ = 457680. Its totient is φ = 228836.

The previous prime is 343253. The next prime is 343261. The reversal of 343257 is 752343.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (343253) and next prime (343261).

It is a cyclic number.

It is not a de Polignac number, because 343257 - 2² = 343253 is a prime.

It is a super-3 number, since 3×343257³ = 121333147081186779, which contains 333 as substring.

It is a D-number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343257.

It is not an unprimeable number, because it can be changed into a prime (343253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57207 + ... + 57212.

It is an arithmetic number, because the mean of its divisors is an integer number (114420).

2³⁴³²⁵⁷ is an apocalyptic number.

It is an amenable number.

343257 is a deficient number, since it is larger than the sum of its proper divisors (114423).

343257 is a wasteful number, since it uses less digits than its factorization.

343257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114422.

The product of its digits is 2520, while the sum is 24.

The square root of 343257 is about 585.8813873132. The cubic root of 343257 is about 70.0174786285.

The spelling of 343257 in words is "three hundred forty-three thousand, two hundred fifty-seven".