531018097 has 2 divisors, whose sum is σ = 531018098. Its totient is φ = 531018096.

The previous prime is 531018091. The next prime is 531018107. The reversal of 531018097 is 790810135.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391683681 + 139334416 = 19791^2 + 11804^2 .

It is a cyclic number.

It is not a de Polignac number, because 531018097 - 2¹⁹ = 530493809 is a prime.

It is not a weakly prime, because it can be changed into another prime (531018091) 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, 265509048 + 265509049.

It is an arithmetic number, because the mean of its divisors is an integer number (265509049).

Almost surely, 2^531018097 is an apocalyptic number.

It is an amenable number.

531018097 is a deficient number, since it is larger than the sum of its proper divisors (1).

531018097 is an equidigital number, since it uses as much as digits as its factorization.

531018097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 531018097 is about 23043.8299117139. The cubic root of 531018097 is about 809.7850859996.

The spelling of 531018097 in words is "five hundred thirty-one million, eighteen thousand, ninety-seven".