11660031 has 20 divisors (see below), whose sum is σ = 17847984. Its totient is φ = 7581600.

The previous prime is 11660029. The next prime is 11660039. The reversal of 11660031 is 13006611.

11660031 is a `hidden beast` number, since 1 + 1 + 660 + 0 + 3 + 1 = 666.

It is not a de Polignac number, because 11660031 - 2¹ = 11660029 is a prime.

It is a super-2 number, since 2×11660031² = 271912645841922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11659986 and 11660013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11660039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1566 + ... + 5076.

Almost surely, 2^11660031 is an apocalyptic number.

11660031 is a deficient number, since it is larger than the sum of its proper divisors (6187953).

11660031 is an equidigital number, since it uses as much as digits as its factorization.

11660031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564 (or 3555 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 11660031 is about 3414.6787550222. The cubic root of 11660031 is about 226.7600626747.

Adding to 11660031 its reverse (13006611), we get a palindrome (24666642).

The spelling of 11660031 in words is "eleven million, six hundred sixty thousand, thirty-one".