340344130521 has 8 divisors (see below), whose sum is σ = 455270325664. Its totient is φ = 226157011200.

The previous prime is 340344130433. The next prime is 340344130523. The reversal of 340344130521 is 125031443043.

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

It is not a de Polignac number, because 340344130521 - 2¹³ = 340344122329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340344130523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184767880 + ... + 184769721.

It is an arithmetic number, because the mean of its divisors is an integer number (56908790708).

Almost surely, 2^340344130521 is an apocalyptic number.

It is an amenable number.

340344130521 is a deficient number, since it is larger than the sum of its proper divisors (114926195143).

340344130521 is a wasteful number, since it uses less digits than its factorization.

340344130521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369537911.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 340344130521 its reverse (125031443043), we get a palindrome (465375573564).

The spelling of 340344130521 in words is "three hundred forty billion, three hundred forty-four million, one hundred thirty thousand, five hundred twenty-one".