11031002321 has 4 divisors (see below), whose sum is σ = 11064328944. Its totient is φ = 10997675700.

The previous prime is 11031002303. The next prime is 11031002327. The reversal of 11031002321 is 12320013011.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12320013011 = 167 ⋅73772533.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11031002321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11031002296 and 11031002305.

It is not an unprimeable number, because it can be changed into a prime (11031002327) 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, 16662815 + ... + 16663476.

It is an arithmetic number, because the mean of its divisors is an integer number (2766082236).

Almost surely, 2^11031002321 is an apocalyptic number.

It is an amenable number.

11031002321 is a deficient number, since it is larger than the sum of its proper divisors (33326623).

11031002321 is an equidigital number, since it uses as much as digits as its factorization.

11031002321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33326622.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 11031002321 its reverse (12320013011), we get a palindrome (23351015332).

The spelling of 11031002321 in words is "eleven billion, thirty-one million, two thousand, three hundred twenty-one".