531265103 has 2 divisors, whose sum is σ = 531265104. Its totient is φ = 531265102.

The previous prime is 531264991. The next prime is 531265139. The reversal of 531265103 is 301562135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531265103 - 2⁸ = 531264847 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531265153) 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, 265632551 + 265632552.

It is an arithmetic number, because the mean of its divisors is an integer number (265632552).

Almost surely, 2^531265103 is an apocalyptic number.

531265103 is a deficient number, since it is larger than the sum of its proper divisors (1).

531265103 is an equidigital number, since it uses as much as digits as its factorization.

531265103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 531265103 is about 23049.1887709741. The cubic root of 531265103 is about 809.9106252046.

The spelling of 531265103 in words is "five hundred thirty-one million, two hundred sixty-five thousand, one hundred three".