10003381 has 4 divisors (see below), whose sum is σ = 10027564. Its totient is φ = 9979200.

The previous prime is 10003373. The next prime is 10003417. The reversal of 10003381 is 18330001.

10003381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1932100 + 8071281 = 1390^2 + 2841^2 .

It is a cyclic number.

It is not a de Polignac number, because 10003381 - 2³ = 10003373 is a prime.

It is a super-2 number, since 2×10003381² = 200135262862322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10003351) 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, 11460 + ... + 12301.

It is an arithmetic number, because the mean of its divisors is an integer number (2506891).

Almost surely, 2^10003381 is an apocalyptic number.

It is an amenable number.

10003381 is a deficient number, since it is larger than the sum of its proper divisors (24183).

10003381 is an equidigital number, since it uses as much as digits as its factorization.

10003381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24182.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 10003381 is about 3162.8121980288. The cubic root of 10003381 is about 215.4677467462.

Adding to 10003381 its reverse (18330001), we get a palindrome (28333382).

The spelling of 10003381 in words is "ten million, three thousand, three hundred eighty-one".