343406473 has 2 divisors, whose sum is σ = 343406474. Its totient is φ = 343406472.

The previous prime is 343406419. The next prime is 343406489. The reversal of 343406473 is 374604343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 275294464 + 68112009 = 16592^2 + 8253^2 .

It is an emirp because it is prime and its reverse (374604343) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343406473 is a prime.

It is not a weakly prime, because it can be changed into another prime (343406573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171703236 + 171703237.

It is an arithmetic number, because the mean of its divisors is an integer number (171703237).

Almost surely, 2^343406473 is an apocalyptic number.

It is an amenable number.

343406473 is a deficient number, since it is larger than the sum of its proper divisors (1).

343406473 is an equidigital number, since it uses as much as digits as its factorization.

343406473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 34.

The square root of 343406473 is about 18531.2296677797. The cubic root of 343406473 is about 700.2764030896.

The spelling of 343406473 in words is "three hundred forty-three million, four hundred six thousand, four hundred seventy-three".