32681281 has 2 divisors, whose sum is σ = 32681282. Its totient is φ = 32681280.

The previous prime is 32681261. The next prime is 32681303. The reversal of 32681281 is 18218623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28515600 + 4165681 = 5340^2 + 2041^2 .

It is a cyclic number.

It is not a de Polignac number, because 32681281 - 2⁷ = 32681153 is a prime.

It is a super-2 number, since 2×32681281² = 2136132255601922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32681261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16340640 + 16340641.

It is an arithmetic number, because the mean of its divisors is an integer number (16340641).

Almost surely, 2^32681281 is an apocalyptic number.

It is an amenable number.

32681281 is a deficient number, since it is larger than the sum of its proper divisors (1).

32681281 is an equidigital number, since it uses as much as digits as its factorization.

32681281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The square root of 32681281 is about 5716.7544113771. The cubic root of 32681281 is about 319.7174622007.

The spelling of 32681281 in words is "thirty-two million, six hundred eighty-one thousand, two hundred eighty-one".