13223516 has 6 divisors (see below), whose sum is σ = 23141160. Its totient is φ = 6611756.

The previous prime is 13223473. The next prime is 13223527. The reversal of 13223516 is 61532231.

13223516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13223516² = 349722750804512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13223491 and 13223500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1652936 + ... + 1652943.

It is an arithmetic number, because the mean of its divisors is an integer number (3856860).

Almost surely, 2^13223516 is an apocalyptic number.

It is an amenable number.

13223516 is a deficient number, since it is larger than the sum of its proper divisors (9917644).

13223516 is a wasteful number, since it uses less digits than its factorization.

13223516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305883 (or 3305881 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 13223516 is about 3636.4152678153. The cubic root of 13223516 is about 236.4734105303.

Adding to 13223516 its reverse (61532231), we get a palindrome (74755747).

The spelling of 13223516 in words is "thirteen million, two hundred twenty-three thousand, five hundred sixteen".