317948777 has 2 divisors, whose sum is σ = 317948778. Its totient is φ = 317948776.

The previous prime is 317948713. The next prime is 317948797. The reversal of 317948777 is 777849713.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260628736 + 57320041 = 16144^2 + 7571^2 .

It is an emirp because it is prime and its reverse (777849713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317948777 - 2⁶ = 317948713 is a prime.

It is not a weakly prime, because it can be changed into another prime (317948797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158974388 + 158974389.

It is an arithmetic number, because the mean of its divisors is an integer number (158974389).

Almost surely, 2^317948777 is an apocalyptic number.

It is an amenable number.

317948777 is a deficient number, since it is larger than the sum of its proper divisors (1).

317948777 is an equidigital number, since it uses as much as digits as its factorization.

317948777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2074464, while the sum is 53.

The square root of 317948777 is about 17831.1182206837. The cubic root of 317948777 is about 682.5257689510.

The spelling of 317948777 in words is "three hundred seventeen million, nine hundred forty-eight thousand, seven hundred seventy-seven".