11173971 has 4 divisors (see below), whose sum is σ = 14898632. Its totient is φ = 7449312.

The previous prime is 11173969. The next prime is 11173973. The reversal of 11173971 is 17937111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11173969) and next prime (11173973).

It is not a de Polignac number, because 11173971 - 2¹ = 11173969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11173973) 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, 1862326 + ... + 1862331.

It is an arithmetic number, because the mean of its divisors is an integer number (3724658).

Almost surely, 2^11173971 is an apocalyptic number.

11173971 is a deficient number, since it is larger than the sum of its proper divisors (3724661).

11173971 is an equidigital number, since it uses as much as digits as its factorization.

11173971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724660.

The product of its digits is 1323, while the sum is 30.

The square root of 11173971 is about 3342.7490183979. The cubic root of 11173971 is about 223.5643304351.

The spelling of 11173971 in words is "eleven million, one hundred seventy-three thousand, nine hundred seventy-one".