381318 has 24 divisors (see below), whose sum is σ = 887832. Its totient is φ = 108864.

The previous prime is 381301. The next prime is 381319. The reversal of 381318 is 813183.

381318 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 355 + ... + 942.

It is an arithmetic number, because the mean of its divisors is an integer number (36993).

2³⁸¹³¹⁸ is an apocalyptic number.

381318 is an abundant number, since it is smaller than the sum of its proper divisors (506514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381318 is a wasteful number, since it uses less digits than its factorization.

381318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316 (or 1309 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 381318 is about 617.5095140967. The cubic root of 381318 is about 72.5152088585.

The spelling of 381318 in words is "three hundred eighty-one thousand, three hundred eighteen".