12919723 has 4 divisors (see below), whose sum is σ = 12971448. Its totient is φ = 12868000.

The previous prime is 12919717. The next prime is 12919727. The reversal of 12919723 is 32791921.

It is a happy number.

12919723 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 12919723 - 2⁹ = 12919211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12919727) 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, 25486 + ... + 25987.

It is an arithmetic number, because the mean of its divisors is an integer number (3242862).

Almost surely, 2^12919723 is an apocalyptic number.

12919723 is a deficient number, since it is larger than the sum of its proper divisors (51725).

12919723 is an equidigital number, since it uses as much as digits as its factorization.

12919723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51724.

The product of its digits is 6804, while the sum is 34.

The square root of 12919723 is about 3594.4016191850. The cubic root of 12919723 is about 234.6484739774.

The spelling of 12919723 in words is "twelve million, nine hundred nineteen thousand, seven hundred twenty-three".