343402999 has 2 divisors, whose sum is σ = 343403000. Its totient is φ = 343402998.

The previous prime is 343402987. The next prime is 343403033. The reversal of 343402999 is 999204343.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 343402999 - 2¹⁵ = 343370231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343402919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171701499 + 171701500.

It is an arithmetic number, because the mean of its divisors is an integer number (171701500).

Almost surely, 2^343402999 is an apocalyptic number.

343402999 is a deficient number, since it is larger than the sum of its proper divisors (1).

343402999 is an equidigital number, since it uses as much as digits as its factorization.

343402999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 343402999 is about 18531.1359338817. The cubic root of 343402999 is about 700.2740416815.

The spelling of 343402999 in words is "three hundred forty-three million, four hundred two thousand, nine hundred ninety-nine".