2308321 has 2 divisors, whose sum is σ = 2308322. Its totient is φ = 2308320.

The previous prime is 2308297. The next prime is 2308357. The reversal of 2308321 is 1238032.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1347921 + 960400 = 1161^2 + 980^2 .

It is a cyclic number.

It is not a de Polignac number, because 2308321 - 2⁷ = 2308193 is a prime.

2308321 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2308391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1154160 + 1154161.

It is an arithmetic number, because the mean of its divisors is an integer number (1154161).

2^2308321 is an apocalyptic number.

It is an amenable number.

2308321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2308321 is an equidigital number, since it uses as much as digits as its factorization.

2308321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2308321 is about 1519.3159645051. The cubic root of 2308321 is about 132.1596056826.

It can be divided in two parts, 23083 and 21, that added together give a square (23104 = 152²).

The spelling of 2308321 in words is "two million, three hundred eight thousand, three hundred twenty-one".