531094321 has 2 divisors, whose sum is σ = 531094322. Its totient is φ = 531094320.

The previous prime is 531094307. The next prime is 531094339. The reversal of 531094321 is 123490135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503374096 + 27720225 = 22436^2 + 5265^2 .

It is a cyclic number.

It is not a de Polignac number, because 531094321 - 2⁹ = 531093809 is a prime.

It is a super-2 number, since 2×531094321² = 564122355596902082, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531094321.

It is not a weakly prime, because it can be changed into another prime (531094301) 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, 265547160 + 265547161.

It is an arithmetic number, because the mean of its divisors is an integer number (265547161).

Almost surely, 2^531094321 is an apocalyptic number.

It is an amenable number.

531094321 is a deficient number, since it is larger than the sum of its proper divisors (1).

531094321 is an equidigital number, since it uses as much as digits as its factorization.

531094321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 531094321 is about 23045.4837441092. The cubic root of 531094321 is about 809.8238305079.

The spelling of 531094321 in words is "five hundred thirty-one million, ninety-four thousand, three hundred twenty-one".