340404323 has 24 divisors (see below), whose sum is σ = 420249600. Its totient is φ = 274146768.

The previous prime is 340404271. The next prime is 340404341. The reversal of 340404323 is 323404043.

It is a happy number.

It is not a de Polignac number, because 340404323 - 2⁸ = 340404067 is a prime.

It is a super-3 number, since 3×340404323³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (340404353) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 116798 + ... + 119676.

It is an arithmetic number, because the mean of its divisors is an integer number (17510400).

Almost surely, 2^340404323 is an apocalyptic number.

340404323 is a deficient number, since it is larger than the sum of its proper divisors (79845277).

340404323 is a wasteful number, since it uses less digits than its factorization.

340404323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3039 (or 3032 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 340404323 is about 18450.0494037279. The cubic root of 340404323 is about 698.2297603235.

Adding to 340404323 its reverse (323404043), we get a palindrome (663808366).

The spelling of 340404323 in words is "three hundred forty million, four hundred four thousand, three hundred twenty-three".