531441316121 has 2 divisors, whose sum is σ = 531441316122. Its totient is φ = 531441316120.

The previous prime is 531441316111. The next prime is 531441316141. The reversal of 531441316121 is 121613144135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425058361225 + 106382954896 = 651965^2 + 326164^2 .

It is a cyclic number.

It is not a de Polignac number, because 531441316121 - 2¹⁸ = 531441053977 is a prime.

It is not a weakly prime, because it can be changed into another prime (531441316111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265720658060 + 265720658061.

It is an arithmetic number, because the mean of its divisors is an integer number (265720658061).

Almost surely, 2^531441316121 is an apocalyptic number.

It is an amenable number.

531441316121 is a deficient number, since it is larger than the sum of its proper divisors (1).

531441316121 is an equidigital number, since it uses as much as digits as its factorization.

531441316121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The spelling of 531441316121 in words is "five hundred thirty-one billion, four hundred forty-one million, three hundred sixteen thousand, one hundred twenty-one".