131343232021321 has 2 divisors, whose sum is σ = 131343232021322. Its totient is φ = 131343232021320.

The previous prime is 131343232021307. The next prime is 131343232021333. The reversal of 131343232021321 is 123120232343131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116001753108921 + 15341478912400 = 10770411^2 + 3916820^2 .

It is a cyclic number.

It is not a de Polignac number, because 131343232021321 - 2⁷ = 131343232021193 is a prime.

It is not a weakly prime, because it can be changed into another prime (131343232028321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65671616010660 + 65671616010661.

It is an arithmetic number, because the mean of its divisors is an integer number (65671616010661).

Almost surely, 2^{131343232021321} is an apocalyptic number.

It is an amenable number.

131343232021321 is a deficient number, since it is larger than the sum of its proper divisors (1).

131343232021321 is an equidigital number, since it uses as much as digits as its factorization.

131343232021321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 131343232021321 its reverse (123120232343131), we get a palindrome (254463464364452).

The spelling of 131343232021321 in words is "one hundred thirty-one trillion, three hundred forty-three billion, two hundred thirty-two million, twenty-one thousand, three hundred twenty-one".