11975823 has 16 divisors (see below), whose sum is σ = 17875200. Its totient is φ = 7923960.

The previous prime is 11975819. The next prime is 11975849. The reversal of 11975823 is 32857911.

11975823 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11975823 - 2² = 11975819 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11975863) 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, 2158 + ... + 5348.

It is an arithmetic number, because the mean of its divisors is an integer number (1117200).

Almost surely, 2^11975823 is an apocalyptic number.

11975823 is a deficient number, since it is larger than the sum of its proper divisors (5899377).

11975823 is a wasteful number, since it uses less digits than its factorization.

11975823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3339 (or 3333 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 11975823 is about 3460.6102063076. The cubic root of 11975823 is about 228.7889909348.

The spelling of 11975823 in words is "eleven million, nine hundred seventy-five thousand, eight hundred twenty-three".