343402973 has 2 divisors, whose sum is σ = 343402974. Its totient is φ = 343402972.

The previous prime is 343402963. The next prime is 343402981. The reversal of 343402973 is 379204343.

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., 267747769 + 75655204 = 16363^2 + 8698^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343402973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343402963) 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, 171701486 + 171701487.

It is an arithmetic number, because the mean of its divisors is an integer number (171701487).

Almost surely, 2^343402973 is an apocalyptic number.

It is an amenable number.

343402973 is a deficient number, since it is larger than the sum of its proper divisors (1).

343402973 is an equidigital number, since it uses as much as digits as its factorization.

343402973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 343402973 is about 18531.1352323596. The cubic root of 343402973 is about 700.2740240083.

The spelling of 343402973 in words is "three hundred forty-three million, four hundred two thousand, nine hundred seventy-three".