12611923 has 4 divisors (see below), whose sum is σ = 12753720. Its totient is φ = 12470128.

The previous prime is 12611917. The next prime is 12611927. The reversal of 12611923 is 32911621.

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 12611923 - 2⁵ = 12611891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12611927) 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, 70765 + ... + 70942.

It is an arithmetic number, because the mean of its divisors is an integer number (3188430).

Almost surely, 2^12611923 is an apocalyptic number.

12611923 is a deficient number, since it is larger than the sum of its proper divisors (141797).

12611923 is an equidigital number, since it uses as much as digits as its factorization.

12611923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141796.

The product of its digits is 648, while the sum is 25.

The square root of 12611923 is about 3551.3269351047. The cubic root of 12611923 is about 232.7700519550.

The spelling of 12611923 in words is "twelve million, six hundred eleven thousand, nine hundred twenty-three".