11216391 has 8 divisors (see below), whose sum is σ = 15100800. Its totient is φ = 7404792.

The previous prime is 11216383. The next prime is 11216393. The reversal of 11216391 is 19361211.

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

It is not a de Polignac number, because 11216391 - 2³ = 11216383 is a prime.

It is a super-3 number, since 3×11216391³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11216393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17841 + ... + 18458.

It is an arithmetic number, because the mean of its divisors is an integer number (1887600).

Almost surely, 2^11216391 is an apocalyptic number.

11216391 is a deficient number, since it is larger than the sum of its proper divisors (3884409).

11216391 is a wasteful number, since it uses less digits than its factorization.

11216391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36405.

The product of its digits is 324, while the sum is 24.

The square root of 11216391 is about 3349.0880848374. The cubic root of 11216391 is about 223.8468806347.

The spelling of 11216391 in words is "eleven million, two hundred sixteen thousand, three hundred ninety-one".