131444534447 has 2 divisors, whose sum is σ = 131444534448. Its totient is φ = 131444534446.

The previous prime is 131444534423. The next prime is 131444534449. The reversal of 131444534447 is 744435444131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131444534447 - 2¹² = 131444530351 is a prime.

Together with 131444534449, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 131444534398 and 131444534407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131444534449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65722267223 + 65722267224.

It is an arithmetic number, because the mean of its divisors is an integer number (65722267224).

Almost surely, 2^131444534447 is an apocalyptic number.

131444534447 is a deficient number, since it is larger than the sum of its proper divisors (1).

131444534447 is an equidigital number, since it uses as much as digits as its factorization.

131444534447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1290240, while the sum is 44.

Adding to 131444534447 its reverse (744435444131), we get a palindrome (875879978578).

The spelling of 131444534447 in words is "one hundred thirty-one billion, four hundred forty-four million, five hundred thirty-four thousand, four hundred forty-seven".