11331440321 has 8 divisors (see below), whose sum is σ = 12166982784. Its totient is φ = 10514674240.

The previous prime is 11331440299. The next prime is 11331440339. The reversal of 11331440321 is 12304413311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11331440321 - 2³⁰ = 10257698497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331440921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4692845 + ... + 4695258.

It is an arithmetic number, because the mean of its divisors is an integer number (1520872848).

Almost surely, 2^11331440321 is an apocalyptic number.

It is an amenable number.

11331440321 is a deficient number, since it is larger than the sum of its proper divisors (835542463).

11331440321 is an equidigital number, since it uses as much as digits as its factorization.

11331440321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9388191.

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

Adding to 11331440321 its reverse (12304413311), we get a palindrome (23635853632).

The spelling of 11331440321 in words is "eleven billion, three hundred thirty-one million, four hundred forty thousand, three hundred twenty-one".