343555073 has 2 divisors, whose sum is σ = 343555074. Its totient is φ = 343555072.

The previous prime is 343555033. The next prime is 343555087. The reversal of 343555073 is 370555343.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303003649 + 40551424 = 17407^2 + 6368^2 .

It is an emirp because it is prime and its reverse (370555343) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343555073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (343555033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171777536 + 171777537.

It is an arithmetic number, because the mean of its divisors is an integer number (171777537).

Almost surely, 2^343555073 is an apocalyptic number.

It is an amenable number.

343555073 is a deficient number, since it is larger than the sum of its proper divisors (1).

343555073 is an equidigital number, since it uses as much as digits as its factorization.

343555073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94500, while the sum is 35.

The square root of 343555073 is about 18535.2386820348. The cubic root of 343555073 is about 700.3773971742.

The spelling of 343555073 in words is "three hundred forty-three million, five hundred fifty-five thousand, seventy-three".