12018723 has 4 divisors (see below), whose sum is σ = 16024968. Its totient is φ = 8012480.

The previous prime is 12018703. The next prime is 12018733. The reversal of 12018723 is 32781021.

12018723 is digitally balanced in base 2 and base 4, because in such bases 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 12018723 - 2⁹ = 12018211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12018693 and 12018702.

It is not an unprimeable number, because it can be changed into a prime (12018703) 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, 2003118 + ... + 2003123.

It is an arithmetic number, because the mean of its divisors is an integer number (4006242).

Almost surely, 2^12018723 is an apocalyptic number.

12018723 is a deficient number, since it is larger than the sum of its proper divisors (4006245).

12018723 is an equidigital number, since it uses as much as digits as its factorization.

12018723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006244.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 12018723 is about 3466.8029941143. The cubic root of 12018723 is about 229.0618559981.

Adding to 12018723 its reverse (32781021), we get a palindrome (44799744).

The spelling of 12018723 in words is "twelve million, eighteen thousand, seven hundred twenty-three".