512409343 has 4 divisors (see below), whose sum is σ = 519626448. Its totient is φ = 505192240.

The previous prime is 512409329. The next prime is 512409377. The reversal of 512409343 is 343904215.

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

It is a cyclic number.

It is not a de Polignac number, because 512409343 - 2²¹ = 510312191 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512409743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3608446 + ... + 3608587.

It is an arithmetic number, because the mean of its divisors is an integer number (129906612).

Almost surely, 2^512409343 is an apocalyptic number.

512409343 is a deficient number, since it is larger than the sum of its proper divisors (7217105).

512409343 is an equidigital number, since it uses as much as digits as its factorization.

512409343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7217104.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 512409343 is about 22636.4604786172. The cubic root of 512409343 is about 800.2131426869.

The spelling of 512409343 in words is "five hundred twelve million, four hundred nine thousand, three hundred forty-three".