531330001 has 2 divisors, whose sum is σ = 531330002. Its totient is φ = 531330000.

The previous prime is 531329999. The next prime is 531330017. The reversal of 531330001 is 100033135.

It is an a-pointer prime, because the next prime (531330017) can be obtained adding 531330001 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 322238401 + 209091600 = 17951^2 + 14460^2 .

It is a cyclic number.

It is not a de Polignac number, because 531330001 - 2¹ = 531329999 is a prime.

Together with 531329999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (531330031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265665000 + 265665001.

It is an arithmetic number, because the mean of its divisors is an integer number (265665001).

Almost surely, 2^531330001 is an apocalyptic number.

It is an amenable number.

531330001 is a deficient number, since it is larger than the sum of its proper divisors (1).

531330001 is an equidigital number, since it uses as much as digits as its factorization.

531330001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 531330001 is about 23050.5965432567. The cubic root of 531330001 is about 809.9436027390.

Adding to 531330001 its reverse (100033135), we get a palindrome (631363136).

The spelling of 531330001 in words is "five hundred thirty-one million, three hundred thirty thousand, one".