12723223 has 2 divisors, whose sum is σ = 12723224. Its totient is φ = 12723222.

The previous prime is 12723211. The next prime is 12723239. The reversal of 12723223 is 32232721.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12723223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12723194 and 12723203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12723203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361611 + 6361612.

It is an arithmetic number, because the mean of its divisors is an integer number (6361612).

Almost surely, 2^12723223 is an apocalyptic number.

12723223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12723223 is an equidigital number, since it uses as much as digits as its factorization.

12723223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 22.

The square root of 12723223 is about 3566.9627135702. The cubic root of 12723223 is about 233.4527780741.

Adding to 12723223 its reverse (32232721), we get a palindrome (44955944).

The spelling of 12723223 in words is "twelve million, seven hundred twenty-three thousand, two hundred twenty-three".