10181381 has 8 divisors (see below), whose sum is σ = 11681280. Its totient is φ = 8692848.

The previous prime is 10181357. The next prime is 10181389. The reversal of 10181381 is 18318101.

10181381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10181381 - 2¹⁸ = 9919237 is a prime.

It is a super-2 number, since 2×10181381² = 207321038134322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10181389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821 + ... + 4586.

It is an arithmetic number, because the mean of its divisors is an integer number (1460160).

Almost surely, 2^10181381 is an apocalyptic number.

It is an amenable number.

10181381 is a deficient number, since it is larger than the sum of its proper divisors (1499899).

10181381 is an equidigital number, since it uses as much as digits as its factorization.

10181381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5683.

The product of its (nonzero) digits is 192, while the sum is 23.

The square root of 10181381 is about 3190.8276355830. The cubic root of 10181381 is about 216.7382503774.

Adding to 10181381 its reverse (18318101), we get a palindrome (28499482).

The spelling of 10181381 in words is "ten million, one hundred eighty-one thousand, three hundred eighty-one".