12721703 has 2 divisors, whose sum is σ = 12721704. Its totient is φ = 12721702.

The previous prime is 12721693. The next prime is 12721711. The reversal of 12721703 is 30712721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12721703 - 2⁸ = 12721447 is a prime.

It is equal to p₈₃₂₂₇₁ and since 12721703 and 832271 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12721103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6360851 + 6360852.

It is an arithmetic number, because the mean of its divisors is an integer number (6360852).

Almost surely, 2^12721703 is an apocalyptic number.

12721703 is a deficient number, since it is larger than the sum of its proper divisors (1).

12721703 is an equidigital number, since it uses as much as digits as its factorization.

12721703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 12721703 is about 3566.7496407794. The cubic root of 12721703 is about 233.4434811018.

The spelling of 12721703 in words is "twelve million, seven hundred twenty-one thousand, seven hundred three".