11312423321 has 4 divisors (see below), whose sum is σ = 11394995892. Its totient is φ = 11229850752.

The previous prime is 11312423257. The next prime is 11312423329. The reversal of 11312423321 is 12332421311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12332421311 = 7 ⋅1761774473.

It can be written as a sum of positive squares in 2 ways, for example, as 4947574921 + 6364848400 = 70339^2 + 79780^2 .

It is a cyclic number.

It is not a de Polignac number, because 11312423321 - 2⁶ = 11312423257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11312423329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41286080 + ... + 41286353.

It is an arithmetic number, because the mean of its divisors is an integer number (2848748973).

Almost surely, 2^11312423321 is an apocalyptic number.

It is an amenable number.

11312423321 is a deficient number, since it is larger than the sum of its proper divisors (82572571).

11312423321 is an equidigital number, since it uses as much as digits as its factorization.

11312423321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82572570.

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

Adding to 11312423321 its reverse (12332421311), we get a palindrome (23644844632).

The spelling of 11312423321 in words is "eleven billion, three hundred twelve million, four hundred twenty-three thousand, three hundred twenty-one".