11213709 has 16 divisors (see below), whose sum is σ = 16176384. Its totient is φ = 6868800.

The previous prime is 11213689. The next prime is 11213711. The reversal of 11213709 is 90731211.

It is not a de Polignac number, because 11213709 - 2⁵ = 11213677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213729) 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 15 ways as a sum of consecutive naturals, for example, 10039 + ... + 11099.

It is an arithmetic number, because the mean of its divisors is an integer number (1011024).

Almost surely, 2^11213709 is an apocalyptic number.

It is an amenable number.

11213709 is a deficient number, since it is larger than the sum of its proper divisors (4962675).

11213709 is a wasteful number, since it uses less digits than its factorization.

11213709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 11213709 is about 3348.6876533950. The cubic root of 11213709 is about 223.8290375457.

The spelling of 11213709 in words is "eleven million, two hundred thirteen thousand, seven hundred nine".