343042387 has 2 divisors, whose sum is σ = 343042388. Its totient is φ = 343042386.

The previous prime is 343042351. The next prime is 343042417. The reversal of 343042387 is 783240343.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343042387 is a prime.

It is not a weakly prime, because it can be changed into another prime (343042087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171521193 + 171521194.

It is an arithmetic number, because the mean of its divisors is an integer number (171521194).

Almost surely, 2^343042387 is an apocalyptic number.

343042387 is a deficient number, since it is larger than the sum of its proper divisors (1).

343042387 is an equidigital number, since it uses as much as digits as its factorization.

343042387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 343042387 is about 18521.4034835376. The cubic root of 343042387 is about 700.0288335062.

The spelling of 343042387 in words is "three hundred forty-three million, forty-two thousand, three hundred eighty-seven".