131343220042321 has 64 divisors (see below), whose sum is σ = 160408151654400. Its totient is φ = 105040761374016.

The previous prime is 131343220042319. The next prime is 131343220042343. The reversal of 131343220042321 is 123240022343131.

It is a cyclic number.

It is not a de Polignac number, because 131343220042321 - 2¹ = 131343220042319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131343220042421) 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, 15161397036 + ... + 15161405698.

It is an arithmetic number, because the mean of its divisors is an integer number (2506377369600).

Almost surely, 2^{131343220042321} is an apocalyptic number.

It is an amenable number.

131343220042321 is a deficient number, since it is larger than the sum of its proper divisors (29064931612079).

131343220042321 is a wasteful number, since it uses less digits than its factorization.

131343220042321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12218.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 131343220042321 its reverse (123240022343131), we get a palindrome (254583242385452).

The spelling of 131343220042321 in words is "one hundred thirty-one trillion, three hundred forty-three billion, two hundred twenty million, forty-two thousand, three hundred twenty-one".