6313213 has 4 divisors (see below), whose sum is σ = 6530940. Its totient is φ = 6095488.

The previous prime is 6313189. The next prime is 6313231. The reversal of 6313213 is 3123136.

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 4937284 + 1375929 = 2222^2 + 1173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6313213 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6313253) 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, 108820 + ... + 108877.

It is an arithmetic number, because the mean of its divisors is an integer number (1632735).

Almost surely, 2^6313213 is an apocalyptic number.

It is an amenable number.

6313213 is a deficient number, since it is larger than the sum of its proper divisors (217727).

6313213 is a wasteful number, since it uses less digits than its factorization.

6313213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217726.

The product of its digits is 324, while the sum is 19.

The square root of 6313213 is about 2512.6107935771. The cubic root of 6313213 is about 184.8205027913.

Adding to 6313213 its reverse (3123136), we get a palindrome (9436349).

It can be divided in two parts, 631 and 3213, that added together give a square (3844 = 62²).

The spelling of 6313213 in words is "six million, three hundred thirteen thousand, two hundred thirteen".