343545505 has 4 divisors (see below), whose sum is σ = 412254612. Its totient is φ = 274836400.

The previous prime is 343545497. The next prime is 343545509. The reversal of 343545505 is 505545343.

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 183548304 + 159997201 = 13548^2 + 12649^2 .

It is not a de Polignac number, because 343545505 - 2³ = 343545497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343545509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34354546 + ... + 34354555.

It is an arithmetic number, because the mean of its divisors is an integer number (103063653).

Almost surely, 2^343545505 is an apocalyptic number.

It is an amenable number.

343545505 is a deficient number, since it is larger than the sum of its proper divisors (68709107).

343545505 is an equidigital number, since it uses as much as digits as its factorization.

343545505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68709106.

The product of its (nonzero) digits is 90000, while the sum is 34.

The square root of 343545505 is about 18534.9805772760. The cubic root of 343545505 is about 700.3708952830.

The spelling of 343545505 in words is "three hundred forty-three million, five hundred forty-five thousand, five hundred five".