343369421 has 2 divisors, whose sum is σ = 343369422. Its totient is φ = 343369420.

The previous prime is 343369399. The next prime is 343369441. The reversal of 343369421 is 124963343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207763396 + 135606025 = 14414^2 + 11645^2 .

It is an emirp because it is prime and its reverse (124963343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343369421 - 2²² = 339175117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343369441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171684710 + 171684711.

It is an arithmetic number, because the mean of its divisors is an integer number (171684711).

Almost surely, 2^343369421 is an apocalyptic number.

It is an amenable number.

343369421 is a deficient number, since it is larger than the sum of its proper divisors (1).

343369421 is an equidigital number, since it uses as much as digits as its factorization.

343369421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 35.

The square root of 343369421 is about 18530.2299230204. The cubic root of 343369421 is about 700.2512166351.

The spelling of 343369421 in words is "three hundred forty-three million, three hundred sixty-nine thousand, four hundred twenty-one".