11312232321 has 8 divisors (see below), whose sum is σ = 16243205440. Its totient is φ = 6961373712.

The previous prime is 11312232319. The next prime is 11312232329. The reversal of 11312232321 is 12323221311.

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

It is not a de Polignac number, because 11312232321 - 2¹ = 11312232319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11312232329) 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, 145028581 + ... + 145028658.

It is an arithmetic number, because the mean of its divisors is an integer number (2030400680).

Almost surely, 2^11312232321 is an apocalyptic number.

It is an amenable number.

11312232321 is a deficient number, since it is larger than the sum of its proper divisors (4930973119).

11312232321 is a wasteful number, since it uses less digits than its factorization.

11312232321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290057255.

The product of its digits is 432, while the sum is 21.

Adding to 11312232321 its reverse (12323221311), we get a palindrome (23635453632).

The spelling of 11312232321 in words is "eleven billion, three hundred twelve million, two hundred thirty-two thousand, three hundred twenty-one".