11321597 has 6 divisors (see below), whose sum is σ = 13170078. Its totient is φ = 9704184.

The previous prime is 11321591. The next prime is 11321659. The reversal of 11321597 is 79512311.

It can be written as a sum of positive squares in only one way, i.e., 7958041 + 3363556 = 2821^2 + 1834^2 .

It is not a de Polignac number, because 11321597 - 2⁶ = 11321533 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321591) 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 5 ways as a sum of consecutive naturals, for example, 115478 + ... + 115575.

It is an arithmetic number, because the mean of its divisors is an integer number (2195013).

Almost surely, 2^11321597 is an apocalyptic number.

It is an amenable number.

11321597 is a deficient number, since it is larger than the sum of its proper divisors (1848481).

11321597 is an equidigital number, since it uses as much as digits as its factorization.

11321597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231067 (or 231060 counting only the distinct ones).

The product of its digits is 1890, while the sum is 29.

The square root of 11321597 is about 3364.7580893728. The cubic root of 11321597 is about 224.5445734350.

The spelling of 11321597 in words is "eleven million, three hundred twenty-one thousand, five hundred ninety-seven".