113811 has 8 divisors (see below), whose sum is σ = 154560. Its totient is φ = 74472.

The previous prime is 113809. The next prime is 113819. The reversal of 113811 is 118311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113811 - 2¹ = 113809 is a prime.

113811 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (113819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145 + ... + 498.

It is an arithmetic number, because the mean of its divisors is an integer number (19320).

2¹¹³⁸¹¹ is an apocalyptic number.

113811 is a deficient number, since it is larger than the sum of its proper divisors (40749).

113811 is an equidigital number, since it uses as much as digits as its factorization.

113811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705.

The product of its digits is 24, while the sum is 15.

The square root of 113811 is about 337.3588593768. The cubic root of 113811 is about 48.4612649945.

The spelling of 113811 in words is "one hundred thirteen thousand, eight hundred eleven".