11231321303 has 4 divisors (see below), whose sum is σ = 11891987280. Its totient is φ = 10570655328.

The previous prime is 11231321293. The next prime is 11231321357. The reversal of 11231321303 is 30312313211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30312313211 = 1367 ⋅22174333.

It is a cyclic number.

It is not a de Polignac number, because 11231321303 - 2¹⁴ = 11231304919 is a prime.

It is a super-2 number, since 2×11231321303² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231321603) 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 3 ways as a sum of consecutive naturals, for example, 330332963 + ... + 330332996.

It is an arithmetic number, because the mean of its divisors is an integer number (2972996820).

Almost surely, 2^11231321303 is an apocalyptic number.

11231321303 is a deficient number, since it is larger than the sum of its proper divisors (660665977).

11231321303 is an equidigital number, since it uses as much as digits as its factorization.

11231321303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660665976.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 11231321303 its reverse (30312313211), we get a palindrome (41543634514).

The spelling of 11231321303 in words is "eleven billion, two hundred thirty-one million, three hundred twenty-one thousand, three hundred three".