32081281 has 2 divisors, whose sum is σ = 32081282. Its totient is φ = 32081280.

The previous prime is 32081267. The next prime is 32081299. The reversal of 32081281 is 18218023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24010000 + 8071281 = 4900^2 + 2841^2 .

It is a cyclic number.

It is not a de Polignac number, because 32081281 - 2¹¹ = 32079233 is a prime.

It is a super-2 number, since 2×32081281² = 2058417181201922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32084281) 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, 16040640 + 16040641.

It is an arithmetic number, because the mean of its divisors is an integer number (16040641).

Almost surely, 2^32081281 is an apocalyptic number.

It is an amenable number.

32081281 is a deficient number, since it is larger than the sum of its proper divisors (1).

32081281 is an equidigital number, since it uses as much as digits as its factorization.

32081281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 32081281 is about 5664.0339864800. The cubic root of 32081281 is about 317.7487863433.

It can be divided in two parts, 3208 and 1281, that added together give a square (4489 = 67²).

The spelling of 32081281 in words is "thirty-two million, eighty-one thousand, two hundred eighty-one".