131310032231321 has 4 divisors (see below), whose sum is σ = 131310082534500. Its totient is φ = 131309981928144.

The previous prime is 131310032231291. The next prime is 131310032231359. The reversal of 131310032231321 is 123132230013131.

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 114050951327296 + 17259080904025 = 10679464^2 + 4154405^2 .

It is a cyclic number.

It is not a de Polignac number, because 131310032231321 - 2²² = 131310028037017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131310032201321) 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, 21008546 + ... + 26532603.

It is an arithmetic number, because the mean of its divisors is an integer number (32827520633625).

Almost surely, 2^{131310032231321} is an apocalyptic number.

It is an amenable number.

131310032231321 is a deficient number, since it is larger than the sum of its proper divisors (50303179).

131310032231321 is an equidigital number, since it uses as much as digits as its factorization.

131310032231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50303178.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 131310032231321 its reverse (123132230013131), we get a palindrome (254442262244452).

The spelling of 131310032231321 in words is "one hundred thirty-one trillion, three hundred ten billion, thirty-two million, two hundred thirty-one thousand, three hundred twenty-one".