11831879 has 4 divisors (see below), whose sum is σ = 12055176. Its totient is φ = 11608584.

The previous prime is 11831873. The next prime is 11831917. The reversal of 11831879 is 97813811.

11831879 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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-11831879 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 (11831873) 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, 111569 + ... + 111674.

It is an arithmetic number, because the mean of its divisors is an integer number (3013794).

Almost surely, 2^11831879 is an apocalyptic number.

11831879 is a deficient number, since it is larger than the sum of its proper divisors (223297).

11831879 is an equidigital number, since it uses as much as digits as its factorization.

11831879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223296.

The product of its digits is 12096, while the sum is 38.

The square root of 11831879 is about 3439.7498455556. The cubic root of 11831879 is about 227.8686467679.

The spelling of 11831879 in words is "eleven million, eight hundred thirty-one thousand, eight hundred seventy-nine".