113530131 has 48 divisors (see below), whose sum is σ = 204029280. Its totient is φ = 59765760.

The previous prime is 113530129. The next prime is 113530133. The reversal of 113530131 is 131035311.

113530131 is a `hidden beast` number, since 1 + 1 + 3 + 530 + 131 = 666.

It is an interprime number because it is at equal distance from previous prime (113530129) and next prime (113530133).

It is not a de Polignac number, because 113530131 - 2¹ = 113530129 is a prime.

It is a super-2 number, since 2×113530131² = 25778181289754322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113530133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19285 + ... + 24473.

It is an arithmetic number, because the mean of its divisors is an integer number (4250610).

Almost surely, 2^113530131 is an apocalyptic number.

113530131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113530131 is a deficient number, since it is larger than the sum of its proper divisors (90499149).

113530131 is a wasteful number, since it uses less digits than its factorization.

113530131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5236 (or 5233 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 113530131 is about 10655.0519003898. The cubic root of 113530131 is about 484.2136703708.

Adding to 113530131 its reverse (131035311), we get a palindrome (244565442).

The spelling of 113530131 in words is "one hundred thirteen million, five hundred thirty thousand, one hundred thirty-one".