11981175 has 24 divisors (see below), whose sum is σ = 20976336. Its totient is φ = 6013440.

The previous prime is 11981161. The next prime is 11981197. The reversal of 11981175 is 57118911.

11981175 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11981175 - 2⁸ = 11980919 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3424 + ... + 5973.

It is an arithmetic number, because the mean of its divisors is an integer number (874014).

Almost surely, 2^11981175 is an apocalyptic number.

11981175 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11981175 is a deficient number, since it is larger than the sum of its proper divisors (8995161).

11981175 is a wasteful number, since it uses less digits than its factorization.

11981175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9427 (or 9422 counting only the distinct ones).

The product of its digits is 2520, while the sum is 33.

The square root of 11981175 is about 3461.3833939626. The cubic root of 11981175 is about 228.8230678223.

The spelling of 11981175 in words is "eleven million, nine hundred eighty-one thousand, one hundred seventy-five".