11712171 has 4 divisors (see below), whose sum is σ = 15616232. Its totient is φ = 7808112.

The previous prime is 11712163. The next prime is 11712191. The reversal of 11712171 is 17121711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17121711 = 3 ⋅5707237.

It is not a de Polignac number, because 11712171 - 2³ = 11712163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11712121) 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, 1952026 + ... + 1952031.

It is an arithmetic number, because the mean of its divisors is an integer number (3904058).

Almost surely, 2^11712171 is an apocalyptic number.

11712171 is a deficient number, since it is larger than the sum of its proper divisors (3904061).

11712171 is an equidigital number, since it uses as much as digits as its factorization.

11712171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904060.

The product of its digits is 98, while the sum is 21.

The square root of 11712171 is about 3422.3049250469. The cubic root of 11712171 is about 227.0975600622.

Adding to 11712171 its reverse (17121711), we get a palindrome (28833882).

The spelling of 11712171 in words is "eleven million, seven hundred twelve thousand, one hundred seventy-one".