11812003 has 16 divisors (see below), whose sum is σ = 13844160. Its totient is φ = 9870336.

The previous prime is 11811983. The next prime is 11812007. The reversal of 11812003 is 30021811.

11812003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-11812003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11812007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86151 + ... + 86287.

It is an arithmetic number, because the mean of its divisors is an integer number (865260).

Almost surely, 2^11812003 is an apocalyptic number.

11812003 is a deficient number, since it is larger than the sum of its proper divisors (2032157).

11812003 is a wasteful number, since it uses less digits than its factorization.

11812003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 11812003 is about 3436.8594675954. The cubic root of 11812003 is about 227.7409788041.

Adding to 11812003 its reverse (30021811), we get a palindrome (41833814).

It can be divided in two parts, 118 and 12003, that added together give a palindrome (12121).

The spelling of 11812003 in words is "eleven million, eight hundred twelve thousand, three".