11681371 has 8 divisors (see below), whose sum is σ = 13242320. Its totient is φ = 10215072.

The previous prime is 11681353. The next prime is 11681399. The reversal of 11681371 is 17318611.

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

It is a cyclic number.

It is not a de Polignac number, because 11681371 - 2¹⁷ = 11550299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11681311) 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, 23400 + ... + 23893.

It is an arithmetic number, because the mean of its divisors is an integer number (1655290).

Almost surely, 2^11681371 is an apocalyptic number.

11681371 is a deficient number, since it is larger than the sum of its proper divisors (1560949).

11681371 is a wasteful number, since it uses less digits than its factorization.

11681371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47325.

The product of its digits is 1008, while the sum is 28.

The square root of 11681371 is about 3417.8020715074. The cubic root of 11681371 is about 226.8983158981.

Adding to 11681371 its reverse (17318611), we get a palindrome (28999982).

The spelling of 11681371 in words is "eleven million, six hundred eighty-one thousand, three hundred seventy-one".