381543227 has 32 divisors (see below), whose sum is σ = 442471680. Its totient is φ = 326430720.

The previous prime is 381543163. The next prime is 381543229. The reversal of 381543227 is 722345183.

It is a cyclic number.

It is not a de Polignac number, because 381543227 - 2⁶ = 381543163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381543229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1080683 + ... + 1081035.

It is an arithmetic number, because the mean of its divisors is an integer number (13827240).

Almost surely, 2^381543227 is an apocalyptic number.

381543227 is a deficient number, since it is larger than the sum of its proper divisors (60928453).

381543227 is a wasteful number, since it uses less digits than its factorization.

381543227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503.

The product of its digits is 40320, while the sum is 35.

The square root of 381543227 is about 19533.1315205729. The cubic root of 381543227 is about 725.2948318102.

The spelling of 381543227 in words is "three hundred eighty-one million, five hundred forty-three thousand, two hundred twenty-seven".