247343 has 2 divisors, whose sum is σ = 247344. Its totient is φ = 247342.

The previous prime is 247339. The next prime is 247363. The reversal of 247343 is 343742.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247343 - 2² = 247339 is a prime.

It is a super-2 number, since 2×247343² = 122357119298, which contains 22 as substring.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 2⁹ + 4⁶ + 3 + 7² + 4⁸ + 3¹¹ .

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247363) 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 as a sum of consecutive naturals, namely, 123671 + 123672.

It is an arithmetic number, because the mean of its divisors is an integer number (123672).

2²⁴⁷³⁴³ is an apocalyptic number.

247343 is a deficient number, since it is larger than the sum of its proper divisors (1).

247343 is an equidigital number, since it uses as much as digits as its factorization.

247343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 23.

The square root of 247343 is about 497.3359025850. The cubic root of 247343 is about 62.7720831467.

The spelling of 247343 in words is "two hundred forty-seven thousand, three hundred forty-three", and thus it is an iban number.