10115381 has 2 divisors, whose sum is σ = 10115382. Its totient is φ = 10115380.

The previous prime is 10115351. The next prime is 10115407. The reversal of 10115381 is 18351101.

10115381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7474756 + 2640625 = 2734^2 + 1625^2 .

It is a cyclic number.

It is not a de Polignac number, because 10115381 - 2¹⁸ = 9853237 is a prime.

It is a super-2 number, since 2×10115381² = 204641865550322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10115351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5057690 + 5057691.

It is an arithmetic number, because the mean of its divisors is an integer number (5057691).

Almost surely, 2^10115381 is an apocalyptic number.

It is an amenable number.

10115381 is a deficient number, since it is larger than the sum of its proper divisors (1).

10115381 is an equidigital number, since it uses as much as digits as its factorization.

10115381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 10115381 is about 3180.4686761545. The cubic root of 10115381 is about 216.2689052045.

Adding to 10115381 its reverse (18351101), we get a palindrome (28466482).

The spelling of 10115381 in words is "ten million, one hundred fifteen thousand, three hundred eighty-one".