1113530531 has 4 divisors (see below), whose sum is σ = 1126042200. Its totient is φ = 1101018864.

The previous prime is 1113530527. The next prime is 1113530543. The reversal of 1113530531 is 1350353111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1113530531 - 2² = 1113530527 is a prime.

It is a super-2 number, since 2×1113530531² = 2479900486938283922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113530497 and 1113530506.

It is not an unprimeable number, because it can be changed into a prime (1113530581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6255701 + ... + 6255878.

It is an arithmetic number, because the mean of its divisors is an integer number (281510550).

Almost surely, 2^1113530531 is an apocalyptic number.

1113530531 is a deficient number, since it is larger than the sum of its proper divisors (12511669).

1113530531 is an equidigital number, since it uses as much as digits as its factorization.

1113530531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12511668.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 1113530531 is about 33369.6048972714. The cubic root of 1113530531 is about 1036.4953936686.

Adding to 1113530531 its reverse (1350353111), we get a palindrome (2463883642).

The spelling of 1113530531 in words is "one billion, one hundred thirteen million, five hundred thirty thousand, five hundred thirty-one".