11971367 has 4 divisors (see below), whose sum is σ = 11979120. Its totient is φ = 11963616.

The previous prime is 11971357. The next prime is 11971369. The reversal of 11971367 is 76317911.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 76317911 = 1831 ⋅41681.

It is a cyclic number.

It is not a de Polignac number, because 11971367 - 2¹⁸ = 11709223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11971369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683 + ... + 4940.

It is an arithmetic number, because the mean of its divisors is an integer number (2994780).

Almost surely, 2^11971367 is an apocalyptic number.

11971367 is a deficient number, since it is larger than the sum of its proper divisors (7753).

11971367 is an equidigital number, since it uses as much as digits as its factorization.

11971367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7752.

The product of its digits is 7938, while the sum is 35.

The square root of 11971367 is about 3459.9663293159. The cubic root of 11971367 is about 228.7606112509.

The spelling of 11971367 in words is "eleven million, nine hundred seventy-one thousand, three hundred sixty-seven".