12157723 has 8 divisors (see below), whose sum is σ = 12462336. Its totient is φ = 11856000.

The previous prime is 12157721. The next prime is 12157729. The reversal of 12157723 is 32775121.

12157723 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 12157723 - 2¹ = 12157721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12157691 and 12157700.

It is not an unprimeable number, because it can be changed into a prime (12157721) 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, 9523 + ... + 10723.

It is an arithmetic number, because the mean of its divisors is an integer number (1557792).

Almost surely, 2^12157723 is an apocalyptic number.

12157723 is a deficient number, since it is larger than the sum of its proper divisors (304613).

12157723 is a wasteful number, since it uses less digits than its factorization.

12157723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445.

The product of its digits is 2940, while the sum is 28.

The square root of 12157723 is about 3486.7926522809. The cubic root of 12157723 is about 229.9415289299.

It can be divided in two parts, 12157 and 723, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 12157723 in words is "twelve million, one hundred fifty-seven thousand, seven hundred twenty-three".