11311031202011 has 4 divisors (see below), whose sum is σ = 11313511152024. Its totient is φ = 11308551252000.

The previous prime is 11311031202001. The next prime is 11311031202059. The reversal of 11311031202011 is 11020213011311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11311031202011 - 2¹⁸ = 11311030939867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11311031202001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239968165 + ... + 1239977286.

It is an arithmetic number, because the mean of its divisors is an integer number (2828377788006).

Almost surely, 2^{11311031202011} is an apocalyptic number.

11311031202011 is a deficient number, since it is larger than the sum of its proper divisors (2479950013).

11311031202011 is an equidigital number, since it uses as much as digits as its factorization.

11311031202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479950012.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 11311031202011 its reverse (11020213011311), we get a palindrome (22331244213322).

The spelling of 11311031202011 in words is "eleven trillion, three hundred eleven billion, thirty-one million, two hundred two thousand, eleven".