131431320331243 has 8 divisors (see below), whose sum is σ = 131881381250976. Its totient is φ = 130981269547200.

The previous prime is 131431320331189. The next prime is 131431320331279. The reversal of 131431320331243 is 342133023134131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131431320331243 - 2⁹ = 131431320330731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131431320331199 and 131431320331208.

It is not an unprimeable number, because it can be changed into a prime (131431320331343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23916738 + ... + 28894168.

It is an arithmetic number, because the mean of its divisors is an integer number (16485172656372).

Almost surely, 2^{131431320331243} is an apocalyptic number.

131431320331243 is a deficient number, since it is larger than the sum of its proper divisors (450060919733).

131431320331243 is an equidigital number, since it uses as much as digits as its factorization.

131431320331243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5067845.

The product of its (nonzero) digits is 46656, while the sum is 34.

Adding to 131431320331243 its reverse (342133023134131), we get a palindrome (473564343465374).

The spelling of 131431320331243 in words is "one hundred thirty-one trillion, four hundred thirty-one billion, three hundred twenty million, three hundred thirty-one thousand, two hundred forty-three".