240321317 has 2 divisors, whose sum is σ = 240321318. Its totient is φ = 240321316.

The previous prime is 240321311. The next prime is 240321343. The reversal of 240321317 is 713123042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192904321 + 47416996 = 13889^2 + 6886^2 .

It is a cyclic number.

It is not a de Polignac number, because 240321317 - 2¹⁰ = 240320293 is a prime.

It is a super-2 number, since 2×240321317² = 115508670809228978, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 240321292 and 240321301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240321311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120160658 + 120160659.

It is an arithmetic number, because the mean of its divisors is an integer number (120160659).

Almost surely, 2^240321317 is an apocalyptic number.

It is an amenable number.

240321317 is a deficient number, since it is larger than the sum of its proper divisors (1).

240321317 is an equidigital number, since it uses as much as digits as its factorization.

240321317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 240321317 is about 15502.3003776859. The cubic root of 240321317 is about 621.7237126896.

Adding to 240321317 its reverse (713123042), we get a palindrome (953444359).

The spelling of 240321317 in words is "two hundred forty million, three hundred twenty-one thousand, three hundred seventeen".