343052561 has 4 divisors (see below), whose sum is σ = 343214052. Its totient is φ = 342891072.

The previous prime is 343052557. The next prime is 343052587. The reversal of 343052561 is 165250343.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124456336 + 218596225 = 11156^2 + 14785^2 .

It is a cyclic number.

It is not a de Polignac number, because 343052561 - 2² = 343052557 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343052531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77516 + ... + 81821.

It is an arithmetic number, because the mean of its divisors is an integer number (85803513).

Almost surely, 2^343052561 is an apocalyptic number.

It is an amenable number.

343052561 is a deficient number, since it is larger than the sum of its proper divisors (161491).

343052561 is a wasteful number, since it uses less digits than its factorization.

343052561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161490.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 343052561 is about 18521.6781367132. The cubic root of 343052561 is about 700.0357539561.

The spelling of 343052561 in words is "three hundred forty-three million, fifty-two thousand, five hundred sixty-one".