531830503 has 2 divisors, whose sum is σ = 531830504. Its totient is φ = 531830502.

The previous prime is 531830491. The next prime is 531830531. The reversal of 531830503 is 305038135.

It is an a-pointer prime, because the next prime (531830531) can be obtained adding 531830503 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531830503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531830573) 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, 265915251 + 265915252.

It is an arithmetic number, because the mean of its divisors is an integer number (265915252).

Almost surely, 2^531830503 is an apocalyptic number.

531830503 is a deficient number, since it is larger than the sum of its proper divisors (1).

531830503 is an equidigital number, since it uses as much as digits as its factorization.

531830503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 531830503 is about 23061.4505831702. The cubic root of 531830503 is about 810.1978396996.

Adding to 531830503 its reverse (305038135), we get a palindrome (836868638).

The spelling of 531830503 in words is "five hundred thirty-one million, eight hundred thirty thousand, five hundred three".