1240130317 has 2 divisors, whose sum is σ = 1240130318. Its totient is φ = 1240130316.

The previous prime is 1240130267. The next prime is 1240130357. The reversal of 1240130317 is 7130310421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 967583236 + 272547081 = 31106^2 + 16509^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240130317 - 2⁷ = 1240130189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240130357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620065158 + 620065159.

It is an arithmetic number, because the mean of its divisors is an integer number (620065159).

Almost surely, 2^1240130317 is an apocalyptic number.

It is an amenable number.

1240130317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240130317 is an equidigital number, since it uses as much as digits as its factorization.

1240130317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1240130317 is about 35215.4840517634. The cubic root of 1240130317 is about 1074.3747052577.

Adding to 1240130317 its reverse (7130310421), we get a palindrome (8370440738).

The spelling of 1240130317 in words is "one billion, two hundred forty million, one hundred thirty thousand, three hundred seventeen".