381887323 has 4 divisors (see below), whose sum is σ = 392208640. Its totient is φ = 371566008.

The previous prime is 381887291. The next prime is 381887347. The reversal of 381887323 is 323788183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 381887323 - 2⁵ = 381887291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381887323.

It is not an unprimeable number, because it can be changed into a prime (381887393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5160603 + ... + 5160676.

It is an arithmetic number, because the mean of its divisors is an integer number (98052160).

Almost surely, 2^381887323 is an apocalyptic number.

381887323 is a deficient number, since it is larger than the sum of its proper divisors (10321317).

381887323 is a wasteful number, since it uses less digits than its factorization.

381887323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10321316.

The product of its digits is 193536, while the sum is 43.

The square root of 381887323 is about 19541.9375446756. The cubic root of 381887323 is about 725.5128027983.

The spelling of 381887323 in words is "three hundred eighty-one million, eight hundred eighty-seven thousand, three hundred twenty-three".