11812203 has 32 divisors (see below), whose sum is σ = 19145280. Its totient is φ = 7153920.

The previous prime is 11812183. The next prime is 11812211. The reversal of 11812203 is 30221811.

It is not a de Polignac number, because 11812203 - 2¹⁶ = 11746667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11812403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25393 + ... + 25853.

It is an arithmetic number, because the mean of its divisors is an integer number (598290).

Almost surely, 2^11812203 is an apocalyptic number.

11812203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11812203 is a deficient number, since it is larger than the sum of its proper divisors (7333077).

11812203 is a wasteful number, since it uses less digits than its factorization.

11812203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 11812203 is about 3436.8885638030. Note that the first 3 decimals coincide. The cubic root of 11812203 is about 227.7422641616.

It can be divided in two parts, 118 and 12203, that added together give a palindrome (12321).

The spelling of 11812203 in words is "eleven million, eight hundred twelve thousand, two hundred three".