7217313 has 8 divisors (see below), whose sum is σ = 9716928. Its totient is φ = 4764624.

The previous prime is 7217281. The next prime is 7217323. The reversal of 7217313 is 3137127.

7217313 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7217313 - 2⁵ = 7217281 is a prime.

7217313 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7217323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11370 + ... + 11987.

It is an arithmetic number, because the mean of its divisors is an integer number (1214616).

Almost surely, 2^7217313 is an apocalyptic number.

It is an amenable number.

7217313 is a deficient number, since it is larger than the sum of its proper divisors (2499615).

7217313 is a wasteful number, since it uses less digits than its factorization.

7217313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23463.

The product of its digits is 882, while the sum is 24.

The square root of 7217313 is about 2686.5057230536. The cubic root of 7217313 is about 193.2525263437.

The spelling of 7217313 in words is "seven million, two hundred seventeen thousand, three hundred thirteen".