11311312303 has 16 divisors (see below), whose sum is σ = 11488748544. Its totient is φ = 11135678400.

The previous prime is 11311312297. The next prime is 11311312307. The reversal of 11311312303 is 30321311311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11311312303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311312307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15558526 + ... + 15559252.

It is an arithmetic number, because the mean of its divisors is an integer number (718046784).

Almost surely, 2^11311312303 is an apocalyptic number.

11311312303 is a deficient number, since it is larger than the sum of its proper divisors (177436241).

11311312303 is a wasteful number, since it uses less digits than its factorization.

11311312303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 11311312303 its reverse (30321311311), we get a palindrome (41632623614).

The spelling of 11311312303 in words is "eleven billion, three hundred eleven million, three hundred twelve thousand, three hundred three".