240205313 has 2 divisors, whose sum is σ = 240205314. Its totient is φ = 240205312.

The previous prime is 240205279. The next prime is 240205319. The reversal of 240205313 is 313502042.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177209344 + 62995969 = 13312^2 + 7937^2 .

It is a cyclic number.

It is not a de Polignac number, because 240205313 - 2⁶ = 240205249 is a prime.

It is not a weakly prime, because it can be changed into another prime (240205319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120102656 + 120102657.

It is an arithmetic number, because the mean of its divisors is an integer number (120102657).

Almost surely, 2^240205313 is an apocalyptic number.

It is an amenable number.

240205313 is a deficient number, since it is larger than the sum of its proper divisors (1).

240205313 is an equidigital number, since it uses as much as digits as its factorization.

240205313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 240205313 is about 15498.5584168335. The cubic root of 240205313 is about 621.6236604676.

Adding to 240205313 its reverse (313502042), we get a palindrome (553707355).

The spelling of 240205313 in words is "two hundred forty million, two hundred five thousand, three hundred thirteen".