343220077 has 2 divisors, whose sum is σ = 343220078. Its totient is φ = 343220076.

The previous prime is 343220071. The next prime is 343220107. The reversal of 343220077 is 770022343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254370601 + 88849476 = 15949^2 + 9426^2 .

It is an emirp because it is prime and its reverse (770022343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343220077 - 2³ = 343220069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343220071) 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, 171610038 + 171610039.

It is an arithmetic number, because the mean of its divisors is an integer number (171610039).

Almost surely, 2^343220077 is an apocalyptic number.

It is an amenable number.

343220077 is a deficient number, since it is larger than the sum of its proper divisors (1).

343220077 is an equidigital number, since it uses as much as digits as its factorization.

343220077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 343220077 is about 18526.1997452257. The cubic root of 343220077 is about 700.1496802367.

The spelling of 343220077 in words is "three hundred forty-three million, two hundred twenty thousand, seventy-seven".