343378549 has 2 divisors, whose sum is σ = 343378550. Its totient is φ = 343378548.

The previous prime is 343378499. The next prime is 343378559. The reversal of 343378549 is 945873343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243578449 + 99800100 = 15607^2 + 9990^2 .

It is an emirp because it is prime and its reverse (945873343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343378549 - 2⁷ = 343378421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 343378499 and 343378508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343378559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171689274 + 171689275.

It is an arithmetic number, because the mean of its divisors is an integer number (171689275).

Almost surely, 2^343378549 is an apocalyptic number.

It is an amenable number.

343378549 is a deficient number, since it is larger than the sum of its proper divisors (1).

343378549 is an equidigital number, since it uses as much as digits as its factorization.

343378549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 46.

The square root of 343378549 is about 18530.4762216193. The cubic root of 343378549 is about 700.2574216493.

The spelling of 343378549 in words is "three hundred forty-three million, three hundred seventy-eight thousand, five hundred forty-nine".