113863 has 4 divisors (see below), whose sum is σ = 117568. Its totient is φ = 110160.

The previous prime is 113843. The next prime is 113891. The reversal of 113863 is 368311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113863 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 (113843) 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 3 ways as a sum of consecutive naturals, for example, 1806 + ... + 1867.

It is an arithmetic number, because the mean of its divisors is an integer number (29392).

2¹¹³⁸⁶³ is an apocalyptic number.

113863 is a deficient number, since it is larger than the sum of its proper divisors (3705).

113863 is an equidigital number, since it uses as much as digits as its factorization.

113863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704.

The product of its digits is 432, while the sum is 22.

The square root of 113863 is about 337.4359198426. The cubic root of 113863 is about 48.4686444865.

The spelling of 113863 in words is "one hundred thirteen thousand, eight hundred sixty-three".