12115803 has 8 divisors (see below), whose sum is σ = 18462208. Its totient is φ = 6923304.

The previous prime is 12115783. The next prime is 12115819. The reversal of 12115803 is 30851121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12115803 - 2⁶ = 12115739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 576943 = 12115803 / (1 + 2 + 1 + 1 + 5 + 8 + 0 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12115803.

It is not an unprimeable number, because it can be changed into a prime (12115003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288451 + ... + 288492.

It is an arithmetic number, because the mean of its divisors is an integer number (2307776).

Almost surely, 2^12115803 is an apocalyptic number.

12115803 is a deficient number, since it is larger than the sum of its proper divisors (6346405).

12115803 is an equidigital number, since it uses as much as digits as its factorization.

12115803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576953.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 12115803 is about 3480.7762065378. The cubic root of 12115803 is about 229.6769440565.

Adding to 12115803 its reverse (30851121), we get a palindrome (42966924).

The spelling of 12115803 in words is "twelve million, one hundred fifteen thousand, eight hundred three".