340312405 has 8 divisors (see below), whose sum is σ = 410311584. Its totient is φ = 270958800.

The previous prime is 340312397. The next prime is 340312411. The reversal of 340312405 is 504213043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 340312405 - 2³ = 340312397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 160231 + ... + 162340.

It is an arithmetic number, because the mean of its divisors is an integer number (51288948).

Almost surely, 2^340312405 is an apocalyptic number.

It is an amenable number.

340312405 is a deficient number, since it is larger than the sum of its proper divisors (69999179).

340312405 is a wasteful number, since it uses less digits than its factorization.

340312405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322787.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 340312405 is about 18447.5582395069. The cubic root of 340312405 is about 698.1669079483.

Adding to 340312405 its reverse (504213043), we get a palindrome (844525448).

The spelling of 340312405 in words is "three hundred forty million, three hundred twelve thousand, four hundred five".