340324021 has 16 divisors (see below), whose sum is σ = 353491200. Its totient is φ = 327495168.

The previous prime is 340324013. The next prime is 340324073. The reversal of 340324021 is 120423043.

It is a cyclic number.

It is not a de Polignac number, because 340324021 - 2³ = 340324013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340324021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340321021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597825 + ... + 598393.

It is an arithmetic number, because the mean of its divisors is an integer number (22093200).

Almost surely, 2^340324021 is an apocalyptic number.

It is an amenable number.

340324021 is a deficient number, since it is larger than the sum of its proper divisors (13167179).

340324021 is a wasteful number, since it uses less digits than its factorization.

340324021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 340324021 is about 18447.8730752355. The cubic root of 340324021 is about 698.1748514481.

Adding to 340324021 its reverse (120423043), we get a palindrome (460747064).

The spelling of 340324021 in words is "three hundred forty million, three hundred twenty-four thousand, twenty-one".