131444523317 has 2 divisors, whose sum is σ = 131444523318. Its totient is φ = 131444523316.

The previous prime is 131444523307. The next prime is 131444523347. The reversal of 131444523317 is 713325444131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123088003921 + 8356519396 = 350839^2 + 91414^2 .

It is a cyclic number.

It is not a de Polignac number, because 131444523317 - 2⁶ = 131444523253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131444523307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65722261658 + 65722261659.

It is an arithmetic number, because the mean of its divisors is an integer number (65722261659).

Almost surely, 2^131444523317 is an apocalyptic number.

It is an amenable number.

131444523317 is a deficient number, since it is larger than the sum of its proper divisors (1).

131444523317 is an equidigital number, since it uses as much as digits as its factorization.

131444523317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 38.

Adding to 131444523317 its reverse (713325444131), we get a palindrome (844769967448).

The spelling of 131444523317 in words is "one hundred thirty-one billion, four hundred forty-four million, five hundred twenty-three thousand, three hundred seventeen".