11303231321 has 4 divisors (see below), whose sum is σ = 11319781392. Its totient is φ = 11286681252.

The previous prime is 11303231299. The next prime is 11303231323. The reversal of 11303231321 is 12313230311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12313230311 = 4253 ⋅2895187.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11303231321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11303231293 and 11303231302.

It is not an unprimeable number, because it can be changed into a prime (11303231323) 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, 8274011 + ... + 8275376.

It is an arithmetic number, because the mean of its divisors is an integer number (2829945348).

Almost surely, 2^11303231321 is an apocalyptic number.

It is an amenable number.

11303231321 is a deficient number, since it is larger than the sum of its proper divisors (16550071).

11303231321 is an equidigital number, since it uses as much as digits as its factorization.

11303231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16550070.

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

Adding to 11303231321 its reverse (12313230311), we get a palindrome (23616461632).

The spelling of 11303231321 in words is "eleven billion, three hundred three million, two hundred thirty-one thousand, three hundred twenty-one".