12091823 has 4 divisors (see below), whose sum is σ = 12104400. Its totient is φ = 12079248.

The previous prime is 12091789. The next prime is 12091861. The reversal of 12091823 is 32819021.

12091823 is digitally balanced in base 2, 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 not a de Polignac number, because 12091823 - 2⁶ = 12091759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12091792 and 12091801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12096823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4715 + ... + 6812.

It is an arithmetic number, because the mean of its divisors is an integer number (3026100).

Almost surely, 2^12091823 is an apocalyptic number.

12091823 is a deficient number, since it is larger than the sum of its proper divisors (12577).

12091823 is a wasteful number, since it uses less digits than its factorization.

12091823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12576.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 12091823 is about 3477.3298664349. The cubic root of 12091823 is about 229.5253158961.

The spelling of 12091823 in words is "twelve million, ninety-one thousand, eight hundred twenty-three".