131032424221 has 2 divisors, whose sum is σ = 131032424222. Its totient is φ = 131032424220.

The previous prime is 131032424213. The next prime is 131032424279. The reversal of 131032424221 is 122424230131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119983260996 + 11049163225 = 346386^2 + 105115^2 .

It is a cyclic number.

It is not a de Polignac number, because 131032424221 - 2³ = 131032424213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131032424291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65516212110 + 65516212111.

It is an arithmetic number, because the mean of its divisors is an integer number (65516212111).

Almost surely, 2^131032424221 is an apocalyptic number.

It is an amenable number.

131032424221 is a deficient number, since it is larger than the sum of its proper divisors (1).

131032424221 is an equidigital number, since it uses as much as digits as its factorization.

131032424221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 131032424221 its reverse (122424230131), we get a palindrome (253456654352).

The spelling of 131032424221 in words is "one hundred thirty-one billion, thirty-two million, four hundred twenty-four thousand, two hundred twenty-one".