240350321257 has 2 divisors, whose sum is σ = 240350321258. Its totient is φ = 240350321256.

The previous prime is 240350321221. The next prime is 240350321269. The reversal of 240350321257 is 752123053042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203779113561 + 36571207696 = 451419^2 + 191236^2 .

It is a cyclic number.

It is not a de Polignac number, because 240350321257 - 2⁷ = 240350321129 is a prime.

It is not a weakly prime, because it can be changed into another prime (240350321297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120175160628 + 120175160629.

It is an arithmetic number, because the mean of its divisors is an integer number (120175160629).

Almost surely, 2^240350321257 is an apocalyptic number.

It is an amenable number.

240350321257 is a deficient number, since it is larger than the sum of its proper divisors (1).

240350321257 is an equidigital number, since it uses as much as digits as its factorization.

240350321257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 34.

Adding to 240350321257 its reverse (752123053042), we get a palindrome (992473374299).

The spelling of 240350321257 in words is "two hundred forty billion, three hundred fifty million, three hundred twenty-one thousand, two hundred fifty-seven".