381316 has 12 divisors (see below), whose sum is σ = 718732. Its totient is φ = 175968.

The previous prime is 381301. The next prime is 381319. The reversal of 381316 is 613183.

It can be written as a sum of positive squares in 2 ways, for example, as 21316 + 360000 = 146^2 + 600^2 .

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 3615 + ... + 3718.

2³⁸¹³¹⁶ is an apocalyptic number.

It is an amenable number.

381316 is a deficient number, since it is larger than the sum of its proper divisors (337416).

381316 is a wasteful number, since it uses less digits than its factorization.

381316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7350 (or 7348 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

The square root of 381316 is about 617.5078946864. The cubic root of 381316 is about 72.5150820783.

Adding to 381316 its reverse (613183), we get a palindrome (994499).

The spelling of 381316 in words is "three hundred eighty-one thousand, three hundred sixteen".