131021444431333 has 2 divisors, whose sum is σ = 131021444431334. Its totient is φ = 131021444431332.

The previous prime is 131021444431259. The next prime is 131021444431439. The reversal of 131021444431333 is 333134444120131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126455265224289 + 4566179207044 = 11245233^2 + 2136862^2 .

It is a cyclic number.

It is not a de Polignac number, because 131021444431333 - 2⁴¹ = 128822421175781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131021444431292 and 131021444431301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131021444231333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65510722215666 + 65510722215667.

It is an arithmetic number, because the mean of its divisors is an integer number (65510722215667).

Almost surely, 2^{131021444431333} is an apocalyptic number.

It is an amenable number.

131021444431333 is a deficient number, since it is larger than the sum of its proper divisors (1).

131021444431333 is an equidigital number, since it uses as much as digits as its factorization.

131021444431333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 37.

Adding to 131021444431333 its reverse (333134444120131), we get a palindrome (464155888551464).

The spelling of 131021444431333 in words is "one hundred thirty-one trillion, twenty-one billion, four hundred forty-four million, four hundred thirty-one thousand, three hundred thirty-three".