803281313 has 4 divisors (see below), whose sum is σ = 803350548. Its totient is φ = 803212080.

The previous prime is 803281309. The next prime is 803281319. The reversal of 803281313 is 313182308.

803281313 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 a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 541585984 + 261695329 = 23272^2 + 16177^2 .

It is a cyclic number.

It is not a de Polignac number, because 803281313 - 2² = 803281309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (803281319) 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, 12506 + ... + 41987.

It is an arithmetic number, because the mean of its divisors is an integer number (200837637).

Almost surely, 2^803281313 is an apocalyptic number.

It is an amenable number.

803281313 is a deficient number, since it is larger than the sum of its proper divisors (69235).

803281313 is a wasteful number, since it uses less digits than its factorization.

803281313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69234.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 803281313 is about 28342.2178560535. The cubic root of 803281313 is about 929.5852442012.

The spelling of 803281313 in words is "eight hundred three million, two hundred eighty-one thousand, three hundred thirteen".