3881304217 has 4 divisors (see below), whose sum is σ = 4435776256. Its totient is φ = 3326832180.

The previous prime is 3881304149. The next prime is 3881304241. The reversal of 3881304217 is 7124031883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-3881304217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3881304617) 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 in 3 ways as a sum of consecutive naturals, for example, 277236009 + ... + 277236022.

It is an arithmetic number, because the mean of its divisors is an integer number (1108944064).

Almost surely, 2^3881304217 is an apocalyptic number.

It is an amenable number.

3881304217 is a deficient number, since it is larger than the sum of its proper divisors (554472039).

3881304217 is an equidigital number, since it uses as much as digits as its factorization.

3881304217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554472038.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 3881304217 is about 62300.1141010191. The cubic root of 3881304217 is about 1571.5416472866.

The spelling of 3881304217 in words is "three billion, eight hundred eighty-one million, three hundred four thousand, two hundred seventeen".