11681351 has 16 divisors (see below), whose sum is σ = 13305600. Its totient is φ = 10161600.

The previous prime is 11681347. The next prime is 11681353. The reversal of 11681351 is 15318611.

It is a cyclic number.

It is not a de Polignac number, because 11681351 - 2² = 11681347 is a prime.

It is a super-2 number, since 2×11681351² = 272907922370402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11681351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11681353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26390 + ... + 26828.

It is an arithmetic number, because the mean of its divisors is an integer number (831600).

Almost surely, 2^11681351 is an apocalyptic number.

11681351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11681351 is a deficient number, since it is larger than the sum of its proper divisors (1624249).

11681351 is a wasteful number, since it uses less digits than its factorization.

11681351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550.

The product of its digits is 720, while the sum is 26.

The square root of 11681351 is about 3417.7991456491. The cubic root of 11681351 is about 226.8981864051.

Adding to 11681351 its reverse (15318611), we get a palindrome (26999962).

The spelling of 11681351 in words is "eleven million, six hundred eighty-one thousand, three hundred fifty-one".