11971011 has 8 divisors (see below), whose sum is σ = 17189200. Its totient is φ = 7366752.

The previous prime is 11970967. The next prime is 11971013. The reversal of 11971011 is 11017911.

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

It is not a de Polignac number, because 11971011 - 2¹⁰ = 11969987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11971013) 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 7 ways as a sum of consecutive naturals, for example, 153436 + ... + 153513.

It is an arithmetic number, because the mean of its divisors is an integer number (2148650).

Almost surely, 2^11971011 is an apocalyptic number.

11971011 is a deficient number, since it is larger than the sum of its proper divisors (5218189).

11971011 is a wasteful number, since it uses less digits than its factorization.

11971011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306965.

The product of its (nonzero) digits is 63, while the sum is 21.

The square root of 11971011 is about 3459.9148833461. The cubic root of 11971011 is about 228.7583436295.

Adding to 11971011 its reverse (11017911), we get a palindrome (22988922).

The spelling of 11971011 in words is "eleven million, nine hundred seventy-one thousand, eleven".