531663071 has 2 divisors, whose sum is σ = 531663072. Its totient is φ = 531663070.

The previous prime is 531663029. The next prime is 531663103. The reversal of 531663071 is 170366135.

It is an a-pointer prime, because the next prime (531663103) can be obtained adding 531663071 to its sum of digits (32).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531663071 - 2¹⁸ = 531400927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531663271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265831535 + 265831536.

It is an arithmetic number, because the mean of its divisors is an integer number (265831536).

Almost surely, 2^531663071 is an apocalyptic number.

531663071 is a deficient number, since it is larger than the sum of its proper divisors (1).

531663071 is an equidigital number, since it uses as much as digits as its factorization.

531663071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 531663071 is about 23057.8201701722. The cubic root of 531663071 is about 810.1128080451.

The spelling of 531663071 in words is "five hundred thirty-one million, six hundred sixty-three thousand, seventy-one".