343402109 has 2 divisors, whose sum is σ = 343402110. Its totient is φ = 343402108.

The previous prime is 343402099. The next prime is 343402117. The reversal of 343402109 is 901204343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343360900 + 41209 = 18530^2 + 203^2 .

It is a cyclic number.

It is not a de Polignac number, because 343402109 - 2⁴ = 343402093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343402009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171701054 + 171701055.

It is an arithmetic number, because the mean of its divisors is an integer number (171701055).

Almost surely, 2^343402109 is an apocalyptic number.

It is an amenable number.

343402109 is a deficient number, since it is larger than the sum of its proper divisors (1).

343402109 is an equidigital number, since it uses as much as digits as its factorization.

343402109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 343402109 is about 18531.1119202276. Note that the first 3 decimals coincide. The cubic root of 343402109 is about 700.2734367126.

The spelling of 343402109 in words is "three hundred forty-three million, four hundred two thousand, one hundred nine".