343100561 has 2 divisors, whose sum is σ = 343100562. Its totient is φ = 343100560.

The previous prime is 343100531. The next prime is 343100599. The reversal of 343100561 is 165001343.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232745536 + 110355025 = 15256^2 + 10505^2 .

It is a cyclic number.

It is not a de Polignac number, because 343100561 - 2⁶ = 343100497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (343100531) 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, 171550280 + 171550281.

It is an arithmetic number, because the mean of its divisors is an integer number (171550281).

Almost surely, 2^343100561 is an apocalyptic number.

It is an amenable number.

343100561 is a deficient number, since it is larger than the sum of its proper divisors (1).

343100561 is an equidigital number, since it uses as much as digits as its factorization.

343100561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 343100561 is about 18522.9738703050. The cubic root of 343100561 is about 700.0684021592.

The spelling of 343100561 in words is "three hundred forty-three million, one hundred thousand, five hundred sixty-one".