531240126163 has 2 divisors, whose sum is σ = 531240126164. Its totient is φ = 531240126162.

The previous prime is 531240126143. The next prime is 531240126167. The reversal of 531240126163 is 361621042135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531240126163 - 2²¹ = 531238029011 is a prime.

It is not a weakly prime, because it can be changed into another prime (531240126167) 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, 265620063081 + 265620063082.

It is an arithmetic number, because the mean of its divisors is an integer number (265620063082).

Almost surely, 2^531240126163 is an apocalyptic number.

531240126163 is a deficient number, since it is larger than the sum of its proper divisors (1).

531240126163 is an equidigital number, since it uses as much as digits as its factorization.

531240126163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 531240126163 its reverse (361621042135), we get a palindrome (892861168298).

The spelling of 531240126163 in words is "five hundred thirty-one billion, two hundred forty million, one hundred twenty-six thousand, one hundred sixty-three".