11571371 has 8 divisors (see below), whose sum is σ = 13309920. Its totient is φ = 9854208.

The previous prime is 11571349. The next prime is 11571379. The reversal of 11571371 is 17317511.

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

It is not a de Polignac number, because 11571371 - 2¹⁸ = 11309227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11571371.

It is not an unprimeable number, because it can be changed into a prime (11571379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4166 + ... + 6363.

It is an arithmetic number, because the mean of its divisors is an integer number (1663740).

Almost surely, 2^11571371 is an apocalyptic number.

11571371 is a deficient number, since it is larger than the sum of its proper divisors (1738549).

11571371 is a wasteful number, since it uses less digits than its factorization.

11571371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10693.

The product of its digits is 735, while the sum is 26.

The square root of 11571371 is about 3401.6717948679. The cubic root of 11571371 is about 226.1838572260.

Adding to 11571371 its reverse (17317511), we get a palindrome (28888882).

The spelling of 11571371 in words is "eleven million, five hundred seventy-one thousand, three hundred seventy-one".