11321530 has 32 divisors (see below), whose sum is σ = 23405760. Its totient is φ = 3899520.

The previous prime is 11321521. The next prime is 11321533. The reversal of 11321530 is 3512311.

It is not an unprimeable number, because it can be changed into a prime (11321533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619 + ... + 4798.

It is an arithmetic number, because the mean of its divisors is an integer number (731430).

Almost surely, 2^11321530 is an apocalyptic number.

11321530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11321530 is an abundant number, since it is smaller than the sum of its proper divisors (12084230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11321530 is a wasteful number, since it uses less digits than its factorization.

11321530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5454.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 11321530 is about 3364.7481332189. The cubic root of 11321530 is about 224.5441304906.

Adding to 11321530 its reverse (3512311), we get a palindrome (14833841).

It can be divided in two parts, 1132 and 1530, that added together give a palindrome (2662).

The spelling of 11321530 in words is "eleven million, three hundred twenty-one thousand, five hundred thirty".