2305321 has 2 divisors, whose sum is σ = 2305322. Its totient is φ = 2305320.

The previous prime is 2305301. The next prime is 2305333. The reversal of 2305321 is 1235032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2190400 + 114921 = 1480^2 + 339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2305321 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2305295 and 2305304.

It is not a weakly prime, because it can be changed into another prime (2305301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1152660 + 1152661.

It is an arithmetic number, because the mean of its divisors is an integer number (1152661).

2^2305321 is an apocalyptic number.

It is an amenable number.

2305321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2305321 is an equidigital number, since it uses as much as digits as its factorization.

2305321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 2305321 is about 1518.3283571086. The cubic root of 2305321 is about 132.1023272969.

It can be divided in two parts, 230 and 5321, that multiplied together give a triangular number (1223830 = T₁₅₆₄).

The spelling of 2305321 in words is "two million, three hundred five thousand, three hundred twenty-one".