12723481 has 2 divisors, whose sum is σ = 12723482. Its totient is φ = 12723480.

The previous prime is 12723467. The next prime is 12723509. The reversal of 12723481 is 18432721.

12723481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (12723509) can be obtained adding 12723481 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12138256 + 585225 = 3484^2 + 765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12723481 is a prime.

It is a super-2 number, since 2×12723481² = 323773937514722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12723421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361740 + 6361741.

It is an arithmetic number, because the mean of its divisors is an integer number (6361741).

Almost surely, 2^12723481 is an apocalyptic number.

It is an amenable number.

12723481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12723481 is an equidigital number, since it uses as much as digits as its factorization.

12723481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 28.

The square root of 12723481 is about 3566.9988786093. The cubic root of 12723481 is about 233.4543560393.

It can be divided in two parts, 1272 and 3481, that added together give a triangular number (4753 = T₉₇).

The spelling of 12723481 in words is "twelve million, seven hundred twenty-three thousand, four hundred eighty-one".