112813 has 4 divisors (see below), whose sum is σ = 115900. Its totient is φ = 109728.

The previous prime is 112807. The next prime is 112831. The reversal of 112813 is 318211.

112813 = 237² + 238².

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

It can be written as a sum of positive squares in 2 ways, for example, as 56644 + 56169 = 238^2 + 237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488 + ... + 1561.

It is an arithmetic number, because the mean of its divisors is an integer number (28975).

2¹¹²⁸¹³ is an apocalyptic number.

112813 is the 238-th centered square number.

It is an amenable number.

112813 is a deficient number, since it is larger than the sum of its proper divisors (3087).

112813 is an equidigital number, since it uses as much as digits as its factorization.

112813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3086.

The product of its digits is 48, while the sum is 16.

The square root of 112813 is about 335.8764653857. The cubic root of 112813 is about 48.3191978746.

The spelling of 112813 in words is "one hundred twelve thousand, eight hundred thirteen".