240023321 has 2 divisors, whose sum is σ = 240023322. Its totient is φ = 240023320.

The previous prime is 240023293. The next prime is 240023339. The reversal of 240023321 is 123320042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177928921 + 62094400 = 13339^2 + 7880^2 .

It is a cyclic number.

It is not a de Polignac number, because 240023321 - 2¹⁰ = 240022297 is a prime.

It is a super-2 number, since 2×240023321² = 115222389247738082, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240023321.

It is not a weakly prime, because it can be changed into another prime (240023621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120011660 + 120011661.

It is an arithmetic number, because the mean of its divisors is an integer number (120011661).

Almost surely, 2^240023321 is an apocalyptic number.

It is an amenable number.

240023321 is a deficient number, since it is larger than the sum of its proper divisors (1).

240023321 is an equidigital number, since it uses as much as digits as its factorization.

240023321 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 17.

The square root of 240023321 is about 15492.6860485843. The cubic root of 240023321 is about 621.4666293636.

Adding to 240023321 its reverse (123320042), we get a palindrome (363343363).

The spelling of 240023321 in words is "two hundred forty million, twenty-three thousand, three hundred twenty-one".