343215161 has 2 divisors, whose sum is σ = 343215162. Its totient is φ = 343215160.

The previous prime is 343215127. The next prime is 343215163. The reversal of 343215161 is 161512343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226683136 + 116532025 = 15056^2 + 10795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343215161 is a prime.

Together with 343215163, 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 343215161.

It is not a weakly prime, because it can be changed into another prime (343215163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171607580 + 171607581.

It is an arithmetic number, because the mean of its divisors is an integer number (171607581).

Almost surely, 2^343215161 is an apocalyptic number.

It is an amenable number.

343215161 is a deficient number, since it is larger than the sum of its proper divisors (1).

343215161 is an equidigital number, since it uses as much as digits as its factorization.

343215161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 343215161 is about 18526.0670677832. The cubic root of 343215161 is about 700.1463374327.

The spelling of 343215161 in words is "three hundred forty-three million, two hundred fifteen thousand, one hundred sixty-one".