343561385 has 4 divisors (see below), whose sum is σ = 412273668. Its totient is φ = 274849104.

The previous prime is 343561331. The next prime is 343561397. The reversal of 343561385 is 583165343.

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 202236841 + 141324544 = 14221^2 + 11888^2 .

It is a cyclic number.

It is not a de Polignac number, because 343561385 - 2⁶ = 343561321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34356134 + ... + 34356143.

It is an arithmetic number, because the mean of its divisors is an integer number (103068417).

Almost surely, 2^343561385 is an apocalyptic number.

It is an amenable number.

343561385 is a deficient number, since it is larger than the sum of its proper divisors (68712283).

343561385 is an equidigital number, since it uses as much as digits as its factorization.

343561385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68712282.

The product of its digits is 129600, while the sum is 38.

The square root of 343561385 is about 18535.4089515176. The cubic root of 343561385 is about 700.3816863993.

The spelling of 343561385 in words is "three hundred forty-three million, five hundred sixty-one thousand, three hundred eighty-five".