10103281 has 4 divisors (see below), whose sum is σ = 10451700. Its totient is φ = 9754864.

The previous prime is 10103267. The next prime is 10103293. The reversal of 10103281 is 18230101.

10103281 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, and also an emirpimes, since its reverse is a distinct semiprime: 18230101 = 19 ⋅959479.

It can be written as a sum of positive squares in 2 ways, for example, as 8503056 + 1600225 = 2916^2 + 1265^2 .

It is a cyclic number.

It is not a de Polignac number, because 10103281 - 2¹⁹ = 9578993 is a prime.

It is a super-2 number, since 2×10103281² = 204152573929922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10103221) 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, 174166 + ... + 174223.

It is an arithmetic number, because the mean of its divisors is an integer number (2612925).

Almost surely, 2^10103281 is an apocalyptic number.

It is an amenable number.

10103281 is a deficient number, since it is larger than the sum of its proper divisors (348419).

10103281 is an equidigital number, since it uses as much as digits as its factorization.

10103281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348418.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 10103281 is about 3178.5658715842. The cubic root of 10103281 is about 216.1826373097.

Adding to 10103281 its reverse (18230101), we get a palindrome (28333382).

The spelling of 10103281 in words is "ten million, one hundred three thousand, two hundred eighty-one".