8281013 has 4 divisors (see below), whose sum is σ = 8918028. Its totient is φ = 7644000.

The previous prime is 8281003. The next prime is 8281019. The reversal of 8281013 is 3101828.

8281013 is digitally balanced in base 3, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 2630884 + 5650129 = 1622^2 + 2377^2 .

It is not a de Polignac number, because 8281013 - 2⁶ = 8280949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8281013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8281019) 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, 318488 + ... + 318513.

It is an arithmetic number, because the mean of its divisors is an integer number (2229507).

Almost surely, 2^8281013 is an apocalyptic number.

It is an amenable number.

8281013 is a deficient number, since it is larger than the sum of its proper divisors (637015).

8281013 is a wasteful number, since it uses less digits than its factorization.

8281013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637014.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 8281013 is about 2877.6749295221. The cubic root of 8281013 is about 202.3148783197.

The spelling of 8281013 in words is "eight million, two hundred eighty-one thousand, thirteen".