11312030321 has 4 divisors (see below), whose sum is σ = 11336253552. Its totient is φ = 11287807092.

The previous prime is 11312030273. The next prime is 11312030347. The reversal of 11312030321 is 12303021311.

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 not a de Polignac number, because 11312030321 - 2¹⁸ = 11311768177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11312030321.

It is not an unprimeable number, because it can be changed into a prime (11312030351) 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, 12110915 + ... + 12111848.

It is an arithmetic number, because the mean of its divisors is an integer number (2834063388).

Almost surely, 2^11312030321 is an apocalyptic number.

It is an amenable number.

11312030321 is a deficient number, since it is larger than the sum of its proper divisors (24223231).

11312030321 is an equidigital number, since it uses as much as digits as its factorization.

11312030321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24223230.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 11312030321 its reverse (12303021311), we get a palindrome (23615051632).

The spelling of 11312030321 in words is "eleven billion, three hundred twelve million, thirty thousand, three hundred twenty-one".