11968311 has 4 divisors (see below), whose sum is σ = 15957752. Its totient is φ = 7978872.

The previous prime is 11968217. The next prime is 11968321. The reversal of 11968311 is 11386911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11386911 = 3 ⋅3795637.

It is not a de Polignac number, because 11968311 - 2⁹ = 11967799 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 (11968321) 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, 1994716 + ... + 1994721.

It is an arithmetic number, because the mean of its divisors is an integer number (3989438).

Almost surely, 2^11968311 is an apocalyptic number.

11968311 is a deficient number, since it is larger than the sum of its proper divisors (3989441).

11968311 is an equidigital number, since it uses as much as digits as its factorization.

11968311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3989440.

The product of its digits is 1296, while the sum is 30.

The square root of 11968311 is about 3459.5246783337. The cubic root of 11968311 is about 228.7411439135.

The spelling of 11968311 in words is "eleven million, nine hundred sixty-eight thousand, three hundred eleven".