531016289 has 2 divisors, whose sum is σ = 531016290. Its totient is φ = 531016288.

The previous prime is 531016261. The next prime is 531016307. The reversal of 531016289 is 982610135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 275560000 + 255456289 = 16600^2 + 15983^2 .

It is a cyclic number.

It is not a de Polignac number, because 531016289 - 2⁸ = 531016033 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (531016259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265508144 + 265508145.

It is an arithmetic number, because the mean of its divisors is an integer number (265508145).

Almost surely, 2^531016289 is an apocalyptic number.

It is an amenable number.

531016289 is a deficient number, since it is larger than the sum of its proper divisors (1).

531016289 is an equidigital number, since it uses as much as digits as its factorization.

531016289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 531016289 is about 23043.7906820905. The cubic root of 531016289 is about 809.7841669518.

The spelling of 531016289 in words is "five hundred thirty-one million, sixteen thousand, two hundred eighty-nine".