531330113 has 2 divisors, whose sum is σ = 531330114. Its totient is φ = 531330112.

The previous prime is 531330109. The next prime is 531330139. The reversal of 531330113 is 311033135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 521300224 + 10029889 = 22832^2 + 3167^2 .

It is a cyclic number.

It is not a de Polignac number, because 531330113 - 2² = 531330109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (531330143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265665056 + 265665057.

It is an arithmetic number, because the mean of its divisors is an integer number (265665057).

Almost surely, 2^531330113 is an apocalyptic number.

It is an amenable number.

531330113 is a deficient number, since it is larger than the sum of its proper divisors (1).

531330113 is an equidigital number, since it uses as much as digits as its factorization.

531330113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 20.

The square root of 531330113 is about 23050.5989726948. The cubic root of 531330113 is about 809.9436596488.

Adding to 531330113 its reverse (311033135), we get a palindrome (842363248).

The spelling of 531330113 in words is "five hundred thirty-one million, three hundred thirty thousand, one hundred thirteen".