11031231311 has 2 divisors, whose sum is σ = 11031231312. Its totient is φ = 11031231310.

The previous prime is 11031231271. The next prime is 11031231347. The reversal of 11031231311 is 11313213011.

11031231311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11031231311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11031231311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11031131311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5515615655 + 5515615656.

It is an arithmetic number, because the mean of its divisors is an integer number (5515615656).

Almost surely, 2^11031231311 is an apocalyptic number.

11031231311 is a deficient number, since it is larger than the sum of its proper divisors (1).

11031231311 is an equidigital number, since it uses as much as digits as its factorization.

11031231311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11031231311 its reverse (11313213011), we get a palindrome (22344444322).

The spelling of 11031231311 in words is "eleven billion, thirty-one million, two hundred thirty-one thousand, three hundred eleven".