531082109 has 2 divisors, whose sum is σ = 531082110. Its totient is φ = 531082108.

The previous prime is 531082087. The next prime is 531082141. The reversal of 531082109 is 901280135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528862009 + 2220100 = 22997^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 531082109 - 2¹² = 531078013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531082009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265541054 + 265541055.

It is an arithmetic number, because the mean of its divisors is an integer number (265541055).

Almost surely, 2^531082109 is an apocalyptic number.

It is an amenable number.

531082109 is a deficient number, since it is larger than the sum of its proper divisors (1).

531082109 is an equidigital number, since it uses as much as digits as its factorization.

531082109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 531082109 is about 23045.2187882866. The cubic root of 531082109 is about 809.8176234219.

The spelling of 531082109 in words is "five hundred thirty-one million, eighty-two thousand, one hundred nine".