12723109 has 8 divisors (see below), whose sum is σ = 14638208. Its totient is φ = 10832400.

The previous prime is 12723107. The next prime is 12723119. The reversal of 12723109 is 90132721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12723109 - 2¹ = 12723107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12723101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4962 + ... + 7075.

It is an arithmetic number, because the mean of its divisors is an integer number (1829776).

Almost surely, 2^12723109 is an apocalyptic number.

It is an amenable number.

12723109 is a deficient number, since it is larger than the sum of its proper divisors (1915099).

12723109 is a wasteful number, since it uses less digits than its factorization.

12723109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12195.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 12723109 is about 3566.9467335524. The cubic root of 12723109 is about 233.4520808269.

The spelling of 12723109 in words is "twelve million, seven hundred twenty-three thousand, one hundred nine".