240641321 has 2 divisors, whose sum is σ = 240641322. Its totient is φ = 240641320.

The previous prime is 240641311. The next prime is 240641329. The reversal of 240641321 is 123146042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170668096 + 69973225 = 13064^2 + 8365^2 .

It is a cyclic number.

It is not a de Polignac number, because 240641321 - 2¹⁰ = 240640297 is a prime.

It is not a weakly prime, because it can be changed into another prime (240641329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120320660 + 120320661.

It is an arithmetic number, because the mean of its divisors is an integer number (120320661).

Almost surely, 2^240641321 is an apocalyptic number.

It is an amenable number.

240641321 is a deficient number, since it is larger than the sum of its proper divisors (1).

240641321 is an equidigital number, since it uses as much as digits as its factorization.

240641321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 240641321 is about 15512.6181220321. The cubic root of 240641321 is about 621.9995459445. Note that the first 3 decimals are identical.

Adding to 240641321 its reverse (123146042), we get a palindrome (363787363).

The spelling of 240641321 in words is "two hundred forty million, six hundred forty-one thousand, three hundred twenty-one".