11991367 has 8 divisors (see below), whose sum is σ = 12603536. Its totient is φ = 11394432.

The previous prime is 11991313. The next prime is 11991373. The reversal of 11991367 is 76319911.

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

It is a cyclic number.

It is not a de Polignac number, because 11991367 - 2¹¹ = 11989319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11991377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2178 + ... + 5359.

It is an arithmetic number, because the mean of its divisors is an integer number (1575442).

Almost surely, 2^11991367 is an apocalyptic number.

11991367 is a deficient number, since it is larger than the sum of its proper divisors (612169).

11991367 is an equidigital number, since it uses as much as digits as its factorization.

11991367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7617.

The product of its digits is 10206, while the sum is 37.

The square root of 11991367 is about 3462.8553247284. The cubic root of 11991367 is about 228.8879335727.

The spelling of 11991367 in words is "eleven million, nine hundred ninety-one thousand, three hundred sixty-seven".