131302230020321 has 4 divisors (see below), whose sum is σ = 135829893124500. Its totient is φ = 126774566916144.

The previous prime is 131302230020209. The next prime is 131302230020347. The reversal of 131302230020321 is 123020032203131.

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 22325020204096 + 108977209816225 = 4724936^2 + 10439215^2 .

It is a cyclic number.

It is not a de Polignac number, because 131302230020321 - 2²⁶ = 131302162911457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131302230010321) 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, 2263831552046 + ... + 2263831552103.

It is an arithmetic number, because the mean of its divisors is an integer number (33957473281125).

Almost surely, 2^{131302230020321} is an apocalyptic number.

It is an amenable number.

131302230020321 is a deficient number, since it is larger than the sum of its proper divisors (4527663104179).

131302230020321 is an equidigital number, since it uses as much as digits as its factorization.

131302230020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4527663104178.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 131302230020321 its reverse (123020032203131), we get a palindrome (254322262223452).

The spelling of 131302230020321 in words is "one hundred thirty-one trillion, three hundred two billion, two hundred thirty million, twenty thousand, three hundred twenty-one".