7232321 has 4 divisors (see below), whose sum is σ = 7238532. Its totient is φ = 7226112.

The previous prime is 7232261. The next prime is 7232341. The reversal of 7232321 is 1232327.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 801025 + 6431296 = 895^2 + 2536^2 .

It is a cyclic number.

It is not a de Polignac number, because 7232321 - 2²² = 3038017 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a deceptive number, since it divides R_7232320.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7232293 and 7232302.

It is not an unprimeable number, because it can be changed into a prime (7232341) 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, 776 + ... + 3881.

It is an arithmetic number, because the mean of its divisors is an integer number (1809633).

It is a Poulet number, since it divides 2^7232320-1.

Almost surely, 2^7232321 is an apocalyptic number.

7232321 is the 1553-rd octagonal number.

It is an amenable number.

7232321 is a deficient number, since it is larger than the sum of its proper divisors (6211).

7232321 is a wasteful number, since it uses less digits than its factorization.

7232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210.

The product of its digits is 504, while the sum is 20.

The square root of 7232321 is about 2689.2974919112. The cubic root of 7232321 is about 193.3863862198.

Adding to 7232321 its reverse (1232327), we get a palindrome (8464648).

The spelling of 7232321 in words is "seven million, two hundred thirty-two thousand, three hundred twenty-one".