11223513 has 12 divisors (see below), whose sum is σ = 18527808. Its totient is φ = 6413400.

The previous prime is 11223503. The next prime is 11223521. The reversal of 11223513 is 31532211.

11223513 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11223513 - 2⁹ = 11223001 is a prime.

It is a super-2 number, since 2×11223513² = 251934488122338, which contains 22 as substring.

11223513 is strictly pandigital in base 8.

It is a Curzon number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11223503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89013 + ... + 89138.

It is an arithmetic number, because the mean of its divisors is an integer number (1543984).

Almost surely, 2^11223513 is an apocalyptic number.

It is an amenable number.

11223513 is a deficient number, since it is larger than the sum of its proper divisors (7304295).

11223513 is a wasteful number, since it uses less digits than its factorization.

11223513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178164 (or 178161 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 11223513 is about 3350.1511906181. The cubic root of 11223513 is about 223.8942488175.

Adding to 11223513 its reverse (31532211), we get a palindrome (42755724).

The spelling of 11223513 in words is "eleven million, two hundred twenty-three thousand, five hundred thirteen".