317429977 has 2 divisors, whose sum is σ = 317429978. Its totient is φ = 317429976.

The previous prime is 317429951. The next prime is 317430007. The reversal of 317429977 is 779924713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316982416 + 447561 = 17804^2 + 669^2 .

It is an emirp because it is prime and its reverse (779924713) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317429977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 317429977.

It is not a weakly prime, because it can be changed into another prime (317429927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158714988 + 158714989.

It is an arithmetic number, because the mean of its divisors is an integer number (158714989).

Almost surely, 2^317429977 is an apocalyptic number.

It is an amenable number.

317429977 is a deficient number, since it is larger than the sum of its proper divisors (1).

317429977 is an equidigital number, since it uses as much as digits as its factorization.

317429977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 666792, while the sum is 49.

The square root of 317429977 is about 17816.5646800948. The cubic root of 317429977 is about 682.1543389573.

The spelling of 317429977 in words is "three hundred seventeen million, four hundred twenty-nine thousand, nine hundred seventy-seven".