343009987 has 2 divisors, whose sum is σ = 343009988. Its totient is φ = 343009986.

The previous prime is 343009981. The next prime is 343010047. The reversal of 343009987 is 789900343.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 343009987 - 2⁷ = 343009859 is a prime.

It is not a weakly prime, because it can be changed into another prime (343009981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171504993 + 171504994.

It is an arithmetic number, because the mean of its divisors is an integer number (171504994).

Almost surely, 2^343009987 is an apocalyptic number.

343009987 is a deficient number, since it is larger than the sum of its proper divisors (1).

343009987 is an equidigital number, since it uses as much as digits as its factorization.

343009987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 343009987 is about 18520.5287991461. The cubic root of 343009987 is about 700.0067938116.

The spelling of 343009987 in words is "three hundred forty-three million, nine thousand, nine hundred eighty-seven".