340013320004021 has 8 divisors (see below), whose sum is σ = 341358687829080. Its totient is φ = 338668125503488.

The previous prime is 340013320004011. The next prime is 340013320004027. The reversal of 340013320004021 is 120400023310043.

It can be written as a sum of positive squares in 4 ways, for example, as 42874536058225 + 297138783945796 = 6547865^2 + 17237714^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 340013320004021 - 2³⁴ = 339996140134837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340013320004027) 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, 39399236 + ... + 47247501.

It is an arithmetic number, because the mean of its divisors is an integer number (42669835978635).

Almost surely, 2^{340013320004021} is an apocalyptic number.

It is an amenable number.

340013320004021 is a deficient number, since it is larger than the sum of its proper divisors (1345367825059).

340013320004021 is a wasteful number, since it uses less digits than its factorization.

340013320004021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86662263.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 340013320004021 its reverse (120400023310043), we get a palindrome (460413343314064).

The spelling of 340013320004021 in words is "three hundred forty trillion, thirteen billion, three hundred twenty million, four thousand, twenty-one".