343360421 has 2 divisors, whose sum is σ = 343360422. Its totient is φ = 343360420.

The previous prime is 343360357. The next prime is 343360469. The reversal of 343360421 is 124063343.

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., 199120321 + 144240100 = 14111^2 + 12010^2 .

It is an emirp because it is prime and its reverse (124063343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343360421 - 2⁶ = 343360357 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343360021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171680210 + 171680211.

It is an arithmetic number, because the mean of its divisors is an integer number (171680211).

Almost surely, 2^343360421 is an apocalyptic number.

It is an amenable number.

343360421 is a deficient number, since it is larger than the sum of its proper divisors (1).

343360421 is an equidigital number, since it uses as much as digits as its factorization.

343360421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 343360421 is about 18529.9870750090. The cubic root of 343360421 is about 700.2450985247.

The spelling of 343360421 in words is "three hundred forty-three million, three hundred sixty thousand, four hundred twenty-one".