11331331312203 has 80 divisors (see below), whose sum is σ = 20367175966720. Its totient is φ = 6133107746304.

The previous prime is 11331331312201. The next prime is 11331331312229. The reversal of 11331331312203 is 30221313313311.

11331331312203 is a `hidden beast` number, since 1 + 1 + 3 + 313 + 31 + 312 + 2 + 0 + 3 = 666.

It is not a de Polignac number, because 11331331312203 - 2¹ = 11331331312201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331331312201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 59188251 + ... + 59379387.

It is an arithmetic number, because the mean of its divisors is an integer number (254589699584).

Almost surely, 2^{11331331312203} is an apocalyptic number.

11331331312203 is a deficient number, since it is larger than the sum of its proper divisors (9035844654517).

11331331312203 is a wasteful number, since it uses less digits than its factorization.

11331331312203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196678 (or 196669 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

Adding to 11331331312203 its reverse (30221313313311), we get a palindrome (41552644625514).

The spelling of 11331331312203 in words is "eleven trillion, three hundred thirty-one billion, three hundred thirty-one million, three hundred twelve thousand, two hundred three".