13442340531321 has 64 divisors (see below), whose sum is σ = 21496965280000. Its totient is φ = 8252744320512.

The previous prime is 13442340531313. The next prime is 13442340531329. The reversal of 13442340531321 is 12313504324431.

13442340531321 is a `hidden beast` number, since 1 + 3 + 44 + 23 + 40 + 531 + 3 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (13442340531313) and next prime (13442340531329).

It is not a de Polignac number, because 13442340531321 - 2³ = 13442340531313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13442340531329) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 569747901 + ... + 569771493.

It is an arithmetic number, because the mean of its divisors is an integer number (335890082500).

Almost surely, 2^{13442340531321} is an apocalyptic number.

It is an amenable number.

13442340531321 is a deficient number, since it is larger than the sum of its proper divisors (8054624748679).

13442340531321 is a wasteful number, since it uses less digits than its factorization.

13442340531321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27367 (or 27361 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 13442340531321 its reverse (12313504324431), we get a palindrome (25755844855752).

The spelling of 13442340531321 in words is "thirteen trillion, four hundred forty-two billion, three hundred forty million, five hundred thirty-one thousand, three hundred twenty-one".