343440497 has 2 divisors, whose sum is σ = 343440498. Its totient is φ = 343440496.

The previous prime is 343440491. The next prime is 343440499. The reversal of 343440497 is 794044343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263445361 + 79995136 = 16231^2 + 8944^2 .

It is a cyclic number.

It is not a de Polignac number, because 343440497 - 2⁴ = 343440481 is a prime.

Together with 343440499, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343440497.

It is not a weakly prime, because it can be changed into another prime (343440491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171720248 + 171720249.

It is an arithmetic number, because the mean of its divisors is an integer number (171720249).

Almost surely, 2^343440497 is an apocalyptic number.

It is an amenable number.

343440497 is a deficient number, since it is larger than the sum of its proper divisors (1).

343440497 is an equidigital number, since it uses as much as digits as its factorization.

343440497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 38.

The square root of 343440497 is about 18532.1476629127. The cubic root of 343440497 is about 700.2995296363.

The spelling of 343440497 in words is "three hundred forty-three million, four hundred forty thousand, four hundred ninety-seven".