13220313 has 8 divisors (see below), whose sum is σ = 17645376. Its totient is φ = 8804400.

The previous prime is 13220309. The next prime is 13220329. The reversal of 13220313 is 31302231.

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

It is not a de Polignac number, because 13220313 - 2² = 13220309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13220292 and 13220301.

It is not an unprimeable number, because it can be changed into a prime (13220213) 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, 2548 + ... + 5738.

It is an arithmetic number, because the mean of its divisors is an integer number (2205672).

Almost surely, 2^13220313 is an apocalyptic number.

It is an amenable number.

13220313 is a deficient number, since it is larger than the sum of its proper divisors (4425063).

13220313 is a wasteful number, since it uses less digits than its factorization.

13220313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4575.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 13220313 is about 3635.9748348964. The cubic root of 13220313 is about 236.4543161257.

Adding to 13220313 its reverse (31302231), we get a palindrome (44522544).

The spelling of 13220313 in words is "thirteen million, two hundred twenty thousand, three hundred thirteen".