38647331 has 2 divisors, whose sum is σ = 38647332. Its totient is φ = 38647330.

The previous prime is 38647321. The next prime is 38647361. The reversal of 38647331 is 13374683.

It is a happy number.

38647331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38647331 is a prime.

It is a super-2 number, since 2×38647331² = 2987232386847122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38647291 and 38647300.

It is not a weakly prime, because it can be changed into another prime (38647321) 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, 19323665 + 19323666.

It is an arithmetic number, because the mean of its divisors is an integer number (19323666).

Almost surely, 2^38647331 is an apocalyptic number.

38647331 is a deficient number, since it is larger than the sum of its proper divisors (1).

38647331 is an equidigital number, since it uses as much as digits as its factorization.

38647331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 38647331 is about 6216.6977568481. The cubic root of 38647331 is about 338.0958465622.

The spelling of 38647331 in words is "thirty-eight million, six hundred forty-seven thousand, three hundred thirty-one".