11681823 has 16 divisors (see below), whose sum is σ = 16358400. Its totient is φ = 7405440.

The previous prime is 11681801. The next prime is 11681833. The reversal of 11681823 is 32818611.

It is not a de Polignac number, because 11681823 - 2⁹ = 11681311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11681833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4423 + ... + 6551.

It is an arithmetic number, because the mean of its divisors is an integer number (1022400).

Almost surely, 2^11681823 is an apocalyptic number.

11681823 is a deficient number, since it is larger than the sum of its proper divisors (4676577).

11681823 is a wasteful number, since it uses less digits than its factorization.

11681823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222.

The product of its digits is 2304, while the sum is 30.

The square root of 11681823 is about 3417.8681952352. The cubic root of 11681823 is about 226.9012424015.

The spelling of 11681823 in words is "eleven million, six hundred eighty-one thousand, eight hundred twenty-three".