12707281 has 2 divisors, whose sum is σ = 12707282. Its totient is φ = 12707280.

The previous prime is 12707273. The next prime is 12707297. The reversal of 12707281 is 18270721.

12707281 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 weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9247681 + 3459600 = 3041^2 + 1860^2 .

It is a cyclic number.

It is not a de Polignac number, because 12707281 - 2³ = 12707273 is a prime.

It is a super-2 number, since 2×12707281² = 322949980825922, which contains 22 as substring.

It is a Chen prime.

It is equal to p₈₃₁₃₆₇ and since 12707281 and 831367 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (12707081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6353640 + 6353641.

It is an arithmetic number, because the mean of its divisors is an integer number (6353641).

Almost surely, 2^12707281 is an apocalyptic number.

It is an amenable number.

12707281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12707281 is an equidigital number, since it uses as much as digits as its factorization.

12707281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 12707281 is about 3564.7273388017. The cubic root of 12707281 is about 233.3552330919.

The spelling of 12707281 in words is "twelve million, seven hundred seven thousand, two hundred eighty-one".