6503313 has 4 divisors (see below), whose sum is σ = 8671088. Its totient is φ = 4335540.

The previous prime is 6503311. The next prime is 6503347. The reversal of 6503313 is 3133056.

6503313 is digitally balanced in base 4, 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 Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6503313 - 2¹ = 6503311 is a prime.

It is a D-number.

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 6503313.

It is not an unprimeable number, because it can be changed into a prime (6503311) 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, 1083883 + ... + 1083888.

It is an arithmetic number, because the mean of its divisors is an integer number (2167772).

Almost surely, 2^6503313 is an apocalyptic number.

It is an amenable number.

6503313 is a deficient number, since it is larger than the sum of its proper divisors (2167775).

6503313 is a wasteful number, since it uses less digits than its factorization.

6503313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167774.

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 6503313 is about 2550.1594067823. The cubic root of 6503313 is about 186.6572596592.

Adding to 6503313 its reverse (3133056), we get a palindrome (9636369).

The spelling of 6503313 in words is "six million, five hundred three thousand, three hundred thirteen".