10381 has 4 divisors (see below), whose sum is σ = 11872. Its totient is φ = 8892.

The previous prime is 10369. The next prime is 10391. The reversal of 10381 is 18301.

10381 is nontrivially palindromic in base 6.

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 10381 - 2⁷ = 10253 is a prime.

It is a super-2 number, since 2×10381² = 215530322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 11 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10301) 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, 735 + ... + 748.

It is an arithmetic number, because the mean of its divisors is an integer number (2968).

2¹⁰³⁸¹ is an apocalyptic number.

It is an amenable number.

10381 is a deficient number, since it is larger than the sum of its proper divisors (1491).

10381 is an equidigital number, since it uses as much as digits as its factorization.

10381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 10381 is about 101.8871925219. The cubic root of 10381 is about 21.8145569525.

Adding to 10381 its reverse (18301), we get a palindrome (28682).

The spelling of 10381 in words is "ten thousand, three hundred eighty-one".