11303213 has 4 divisors (see below), whose sum is σ = 11415228. Its totient is φ = 11191200.

The previous prime is 11303209. The next prime is 11303221. The reversal of 11303213 is 31230311.

11303213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10876804 + 426409 = 3298^2 + 653^2 .

It is a cyclic number.

It is not a de Polignac number, because 11303213 - 2² = 11303209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11303203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55856 + ... + 56057.

It is an arithmetic number, because the mean of its divisors is an integer number (2853807).

Almost surely, 2^11303213 is an apocalyptic number.

It is an amenable number.

11303213 is a deficient number, since it is larger than the sum of its proper divisors (112015).

11303213 is a wasteful number, since it uses less digits than its factorization.

11303213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112014.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 11303213 is about 3362.0251337550. The cubic root of 11303213 is about 224.4229691591.

Adding to 11303213 its reverse (31230311), we get a palindrome (42533524).

The spelling of 11303213 in words is "eleven million, three hundred three thousand, two hundred thirteen".