7220313 has 8 divisors (see below), whose sum is σ = 10696800. Its totient is φ = 4813524.

The previous prime is 7220299. The next prime is 7220347. The reversal of 7220313 is 3130227.

It is not a de Polignac number, because 7220313 - 2⁶ = 7220249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7220383) 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, 133683 + ... + 133736.

It is an arithmetic number, because the mean of its divisors is an integer number (1337100).

Almost surely, 2^7220313 is an apocalyptic number.

It is an amenable number.

7220313 is a deficient number, since it is larger than the sum of its proper divisors (3476487).

7220313 is a wasteful number, since it uses less digits than its factorization.

7220313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267428 (or 267422 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 7220313 is about 2687.0640111467. The cubic root of 7220313 is about 193.2792988775.

The spelling of 7220313 in words is "seven million, two hundred twenty thousand, three hundred thirteen".