11031311303 has 2 divisors, whose sum is σ = 11031311304. Its totient is φ = 11031311302.

The previous prime is 11031311299. The next prime is 11031311311. The reversal of 11031311303 is 30311313011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11031311303 - 2² = 11031311299 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11031311003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5515655651 + 5515655652.

It is an arithmetic number, because the mean of its divisors is an integer number (5515655652).

Almost surely, 2^11031311303 is an apocalyptic number.

11031311303 is a deficient number, since it is larger than the sum of its proper divisors (1).

11031311303 is an equidigital number, since it uses as much as digits as its factorization.

11031311303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 17.

Adding to 11031311303 its reverse (30311313011), we get a palindrome (41342624314).

The spelling of 11031311303 in words is "eleven billion, thirty-one million, three hundred eleven thousand, three hundred three".