531630113 has 16 divisors (see below), whose sum is σ = 634951680. Its totient is φ = 435604176.

The previous prime is 531630107. The next prime is 531630139. The reversal of 531630113 is 311036135.

It is a happy number.

It is not a de Polignac number, because 531630113 - 2⁶ = 531630049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531630413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4643 + ... + 32936.

It is an arithmetic number, because the mean of its divisors is an integer number (39684480).

Almost surely, 2^531630113 is an apocalyptic number.

It is an amenable number.

531630113 is a deficient number, since it is larger than the sum of its proper divisors (103321567).

531630113 is a wasteful number, since it uses less digits than its factorization.

531630113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37676.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 531630113 is about 23057.1054774878. The cubic root of 531630113 is about 810.0960679635.

Adding to 531630113 its reverse (311036135), we get a palindrome (842666248).

The spelling of 531630113 in words is "five hundred thirty-one million, six hundred thirty thousand, one hundred thirteen".