113087 has 4 divisors (see below), whose sum is σ = 121800. Its totient is φ = 104376.

The previous prime is 113083. The next prime is 113089. The reversal of 113087 is 780311.

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 113087 - 2² = 113083 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113081) 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, 4337 + ... + 4362.

It is an arithmetic number, because the mean of its divisors is an integer number (30450).

2¹¹³⁰⁸⁷ is an apocalyptic number.

113087 is a deficient number, since it is larger than the sum of its proper divisors (8713).

113087 is an equidigital number, since it uses as much as digits as its factorization.

113087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8712.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 113087 is about 336.2841060770. The cubic root of 113087 is about 48.3582854384.

Adding to 113087 its reverse (780311), we get a palindrome (893398).

The spelling of 113087 in words is "one hundred thirteen thousand, eighty-seven".