11630181 has 8 divisors (see below), whose sum is σ = 15588864. Its totient is φ = 7712480.

The previous prime is 11630153. The next prime is 11630219. The reversal of 11630181 is 18103611.

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 11630181 - 2⁵ = 11630149 is a prime.

It is a super-3 number, since 3×11630181³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11631181) 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 7 ways as a sum of consecutive naturals, for example, 9576 + ... + 10721.

It is an arithmetic number, because the mean of its divisors is an integer number (1948608).

Almost surely, 2^11630181 is an apocalyptic number.

It is an amenable number.

11630181 is a deficient number, since it is larger than the sum of its proper divisors (3958683).

11630181 is a wasteful number, since it uses less digits than its factorization.

11630181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20491.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 11630181 is about 3410.3051183142. The cubic root of 11630181 is about 226.5663933156.

Adding to 11630181 its reverse (18103611), we get a palindrome (29733792).

It can be divided in two parts, 11630 and 181, that added together give a palindrome (11811).

The spelling of 11630181 in words is "eleven million, six hundred thirty thousand, one hundred eighty-one".