343423405 has 16 divisors (see below), whose sum is σ = 444500784. Its totient is φ = 253209600.

The previous prime is 343423397. The next prime is 343423417. The reversal of 343423405 is 504324343.

It can be written as a sum of positive squares in 8 ways, for example, as 3316041 + 340107364 = 1821^2 + 18442^2 .

It is not a de Polignac number, because 343423405 - 2³ = 343423397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41797 + ... + 49333.

It is an arithmetic number, because the mean of its divisors is an integer number (27781299).

Almost surely, 2^343423405 is an apocalyptic number.

It is an amenable number.

343423405 is a deficient number, since it is larger than the sum of its proper divisors (101077379).

343423405 is a wasteful number, since it uses less digits than its factorization.

343423405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8256.

The product of its (nonzero) digits is 17280, while the sum is 28.

The square root of 343423405 is about 18531.6865125654. The cubic root of 343423405 is about 700.2879121768.

Adding to 343423405 its reverse (504324343), we get a palindrome (847747748).

The spelling of 343423405 in words is "three hundred forty-three million, four hundred twenty-three thousand, four hundred five".