11231342321 has 4 divisors (see below), whose sum is σ = 11245614192. Its totient is φ = 11217070452.

The previous prime is 11231342299. The next prime is 11231342323. The reversal of 11231342321 is 12324313211.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11231342321 is a prime.

It is a super-2 number, since 2×11231342321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11231342323) 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, 7134755 + ... + 7136328.

It is an arithmetic number, because the mean of its divisors is an integer number (2811403548).

Almost surely, 2^11231342321 is an apocalyptic number.

It is an amenable number.

11231342321 is a deficient number, since it is larger than the sum of its proper divisors (14271871).

11231342321 is an equidigital number, since it uses as much as digits as its factorization.

11231342321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14271870.

The product of its digits is 864, while the sum is 23.

Adding to 11231342321 its reverse (12324313211), we get a palindrome (23555655532).

The spelling of 11231342321 in words is "eleven billion, two hundred thirty-one million, three hundred forty-two thousand, three hundred twenty-one".