381307927 has 32 divisors (see below), whose sum is σ = 515257344. Its totient is φ = 272505600.

The previous prime is 381307907. The next prime is 381307931. The reversal of 381307927 is 729703183.

It is a cyclic number.

It is not a de Polignac number, because 381307927 - 2¹¹ = 381305879 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 381307927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381307907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166027 + ... + 168307.

It is an arithmetic number, because the mean of its divisors is an integer number (16101792).

Almost surely, 2^381307927 is an apocalyptic number.

381307927 is a deficient number, since it is larger than the sum of its proper divisors (133949417).

381307927 is a wasteful number, since it uses less digits than its factorization.

381307927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 381307927 is about 19527.1074918944. The cubic root of 381307927 is about 725.1457032567.

The spelling of 381307927 in words is "three hundred eighty-one million, three hundred seven thousand, nine hundred twenty-seven".