11231985 has 24 divisors (see below), whose sum is σ = 19097856. Its totient is φ = 5635840.

The previous prime is 11231959. The next prime is 11231989. The reversal of 11231985 is 58913211.

11231985 is nontrivially palindromic in base 11.

It is not a de Polignac number, because 11231985 - 2¹² = 11227889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11231989) 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 23 ways as a sum of consecutive naturals, for example, 3040 + ... + 5630.

It is an arithmetic number, because the mean of its divisors is an integer number (795744).

Almost surely, 2^11231985 is an apocalyptic number.

11231985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11231985 is a deficient number, since it is larger than the sum of its proper divisors (7865871).

11231985 is a wasteful number, since it uses less digits than its factorization.

11231985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633 (or 2616 counting only the distinct ones).

The product of its digits is 2160, while the sum is 30.

The square root of 11231985 is about 3351.4153726448. The cubic root of 11231985 is about 223.9505697159.

The spelling of 11231985 in words is "eleven million, two hundred thirty-one thousand, nine hundred eighty-five".