38243281 has 2 divisors, whose sum is σ = 38243282. Its totient is φ = 38243280.

The previous prime is 38243267. The next prime is 38243291. The reversal of 38243281 is 18234283.

38243281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29333056 + 8910225 = 5416^2 + 2985^2 .

It is a cyclic number.

It is not a de Polignac number, because 38243281 - 2⁹ = 38242769 is a prime.

It is a super-2 number, since 2×38243281² = 2925097083289922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38243221) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19121640 + 19121641.

It is an arithmetic number, because the mean of its divisors is an integer number (19121641).

Almost surely, 2^38243281 is an apocalyptic number.

It is an amenable number.

38243281 is a deficient number, since it is larger than the sum of its proper divisors (1).

38243281 is an equidigital number, since it uses as much as digits as its factorization.

38243281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

The square root of 38243281 is about 6184.1152156149. The cubic root of 38243281 is about 336.9134753080.

The spelling of 38243281 in words is "thirty-eight million, two hundred forty-three thousand, two hundred eighty-one".