10000381 has 4 divisors (see below), whose sum is σ = 10232992. Its totient is φ = 9767772.

The previous prime is 10000379. The next prime is 10000439. The reversal of 10000381 is 18300001.

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 10000381 - 2¹ = 10000379 is a prime.

It is a super-2 number, since 2×10000381² = 200015240290322, 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 (10000481) 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, 116241 + ... + 116326.

It is an arithmetic number, because the mean of its divisors is an integer number (2558248).

Almost surely, 2^10000381 is an apocalyptic number.

It is an amenable number.

10000381 is a deficient number, since it is larger than the sum of its proper divisors (232611).

10000381 is an equidigital number, since it uses as much as digits as its factorization.

10000381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232610.

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

The square root of 10000381 is about 3162.3379009840. The cubic root of 10000381 is about 215.4462051005.

Adding to 10000381 its reverse (18300001), we get a palindrome (28300382).

The spelling of 10000381 in words is "ten million, three hundred eighty-one", and thus it is an aban number.