383381 has 4 divisors (see below), whose sum is σ = 387072. Its totient is φ = 379692.

The previous prime is 383371. The next prime is 383393. The reversal of 383381 is 183383.

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 cyclic number.

It is not a de Polignac number, because 383381 - 2¹⁰ = 382357 is a prime.

It is a super-2 number, since 2×383381² = 293961982322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 383381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1685 + ... + 1898.

It is an arithmetic number, because the mean of its divisors is an integer number (96768).

2³⁸³³⁸¹ is an apocalyptic number.

It is an amenable number.

383381 is a deficient number, since it is larger than the sum of its proper divisors (3691).

383381 is a wasteful number, since it uses less digits than its factorization.

383381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690.

The product of its digits is 1728, while the sum is 26.

The square root of 383381 is about 619.1776804763. The cubic root of 383381 is about 72.6457472351.

The spelling of 383381 in words is "three hundred eighty-three thousand, three hundred eighty-one".