1258342313 has 2 divisors, whose sum is σ = 1258342314. Its totient is φ = 1258342312.

The previous prime is 1258342303. The next prime is 1258342339. The reversal of 1258342313 is 3132438521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1239955369 + 18386944 = 35213^2 + 4288^2 .

It is an emirp because it is prime and its reverse (3132438521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1258342313 - 2⁶ = 1258342249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1258342313.

It is not a weakly prime, because it can be changed into another prime (1258342303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629171156 + 629171157.

It is an arithmetic number, because the mean of its divisors is an integer number (629171157).

Almost surely, 2^1258342313 is an apocalyptic number.

It is an amenable number.

1258342313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1258342313 is an equidigital number, since it uses as much as digits as its factorization.

1258342313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 1258342313 is about 35473.1209932253. The cubic root of 1258342313 is about 1079.6084294350.

It can be divided in two parts, 125 and 8342313, that added together give a palindrome (8342438).

The spelling of 1258342313 in words is "one billion, two hundred fifty-eight million, three hundred forty-two thousand, three hundred thirteen".