11311421303 has 48 divisors (see below), whose sum is σ = 14313563136. Its totient is φ = 8750327040.

The previous prime is 11311421273. The next prime is 11311421309. The reversal of 11311421303 is 30312411311.

It is not a de Polignac number, because 11311421303 - 2¹⁰ = 11311420279 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 (11311421309) 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 47 ways as a sum of consecutive naturals, for example, 11506550 + ... + 11507532.

It is an arithmetic number, because the mean of its divisors is an integer number (298199232).

Almost surely, 2^11311421303 is an apocalyptic number.

11311421303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11311421303 is a deficient number, since it is larger than the sum of its proper divisors (3002141833).

11311421303 is a wasteful number, since it uses less digits than its factorization.

11311421303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 11311421303 its reverse (30312411311), we get a palindrome (41623832614).

The spelling of 11311421303 in words is "eleven billion, three hundred eleven million, four hundred twenty-one thousand, three hundred three".