10381281 has 4 divisors (see below), whose sum is σ = 13841712. Its totient is φ = 6920852.

The previous prime is 10381279. The next prime is 10381291. The reversal of 10381281 is 18218301.

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 10381281 - 2¹ = 10381279 is a prime.

It is a super-2 number, since 2×10381281² = 215541990401922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10381291) 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, 1730211 + ... + 1730216.

It is an arithmetic number, because the mean of its divisors is an integer number (3460428).

Almost surely, 2^10381281 is an apocalyptic number.

It is an amenable number.

10381281 is a deficient number, since it is larger than the sum of its proper divisors (3460431).

10381281 is an equidigital number, since it uses as much as digits as its factorization.

10381281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3460430.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 10381281 is about 3221.9995344506. Note that the first 3 decimals coincide. The cubic root of 10381281 is about 218.1475378118.

Adding to 10381281 its reverse (18218301), we get a palindrome (28599582).

The spelling of 10381281 in words is "ten million, three hundred eighty-one thousand, two hundred eighty-one".