11031323021 has 8 divisors (see below), whose sum is σ = 11598792600. Its totient is φ = 10476325440.

The previous prime is 11031323011. The next prime is 11031323033. The reversal of 11031323021 is 12032313011.

It can be written as a sum of positive squares in 4 ways, for example, as 2384368900 + 8646954121 = 48830^2 + 92989^2 .

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

It is not a de Polignac number, because 11031323021 - 2³⁰ = 9957581197 is a prime.

It is a super-3 number, since 3×11031323021³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031323011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3116186 + ... + 3119723.

It is an arithmetic number, because the mean of its divisors is an integer number (1449849075).

Almost surely, 2^11031323021 is an apocalyptic number.

It is an amenable number.

11031323021 is a deficient number, since it is larger than the sum of its proper divisors (567469579).

11031323021 is an equidigital number, since it uses as much as digits as its factorization.

11031323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6235999.

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

Adding to 11031323021 its reverse (12032313011), we get a palindrome (23063636032).

The spelling of 11031323021 in words is "eleven billion, thirty-one million, three hundred twenty-three thousand, twenty-one".