240313321 has 2 divisors, whose sum is σ = 240313322. Its totient is φ = 240313320.

The previous prime is 240313319. The next prime is 240313351. The reversal of 240313321 is 123313042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223173721 + 17139600 = 14939^2 + 4140^2 .

It is a cyclic number.

It is not a de Polignac number, because 240313321 - 2¹ = 240313319 is a prime.

Together with 240313319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (240313301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120156660 + 120156661.

It is an arithmetic number, because the mean of its divisors is an integer number (120156661).

Almost surely, 2^240313321 is an apocalyptic number.

It is an amenable number.

240313321 is a deficient number, since it is larger than the sum of its proper divisors (1).

240313321 is an equidigital number, since it uses as much as digits as its factorization.

240313321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 240313321 is about 15502.0424783317. The cubic root of 240313321 is about 621.7168172575.

Adding to 240313321 its reverse (123313042), we get a palindrome (363626363).

The spelling of 240313321 in words is "two hundred forty million, three hundred thirteen thousand, three hundred twenty-one".