11323021 has 4 divisors (see below), whose sum is σ = 11713500. Its totient is φ = 10932544.

The previous prime is 11323019. The next prime is 11323027. The reversal of 11323021 is 12032311.

11323021 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3200521 + 8122500 = 1789^2 + 2850^2 .

It is a cyclic number.

It is not a de Polignac number, because 11323021 - 2¹ = 11323019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11322992 and 11323010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11323027) 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, 195196 + ... + 195253.

It is an arithmetic number, because the mean of its divisors is an integer number (2928375).

Almost surely, 2^11323021 is an apocalyptic number.

It is an amenable number.

11323021 is a deficient number, since it is larger than the sum of its proper divisors (390479).

11323021 is an equidigital number, since it uses as much as digits as its factorization.

11323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390478.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 11323021 is about 3364.9696878278. The cubic root of 11323021 is about 224.5539872444.

Adding to 11323021 its reverse (12032311), we get a palindrome (23355332).

The spelling of 11323021 in words is "eleven million, three hundred twenty-three thousand, twenty-one".