531352043081 has 2 divisors, whose sum is σ = 531352043082. Its totient is φ = 531352043080.

The previous prime is 531352043077. The next prime is 531352043141. The reversal of 531352043081 is 180340253135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 530967255625 + 384787456 = 728675^2 + 19616^2 .

It is a cyclic number.

It is not a de Polignac number, because 531352043081 - 2² = 531352043077 is a prime.

It is a super-2 number, since 2×531352043081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (531352043011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265676021540 + 265676021541.

It is an arithmetic number, because the mean of its divisors is an integer number (265676021541).

Almost surely, 2^531352043081 is an apocalyptic number.

It is an amenable number.

531352043081 is a deficient number, since it is larger than the sum of its proper divisors (1).

531352043081 is an equidigital number, since it uses as much as digits as its factorization.

531352043081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 531352043081 in words is "five hundred thirty-one billion, three hundred fifty-two million, forty-three thousand, eighty-one".