131342212402321 has 4 divisors (see below), whose sum is σ = 131355824414500. Its totient is φ = 131328600390144.

The previous prime is 131342212402307. The next prime is 131342212402337. The reversal of 131342212402321 is 123204212243131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53059001473921 + 78283210928400 = 7284161^2 + 8847780^2 .

It is a cyclic number.

It is not a de Polignac number, because 131342212402321 - 2⁴⁵ = 96157840313489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131342212402361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6805991616 + ... + 6806010913.

It is an arithmetic number, because the mean of its divisors is an integer number (32838956103625).

Almost surely, 2^{131342212402321} is an apocalyptic number.

It is an amenable number.

131342212402321 is a deficient number, since it is larger than the sum of its proper divisors (13612012179).

131342212402321 is an equidigital number, since it uses as much as digits as its factorization.

131342212402321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13612012178.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 131342212402321 its reverse (123204212243131), we get a palindrome (254546424645452).

The spelling of 131342212402321 in words is "one hundred thirty-one trillion, three hundred forty-two billion, two hundred twelve million, four hundred two thousand, three hundred twenty-one".