317881051 has 2 divisors, whose sum is σ = 317881052. Its totient is φ = 317881050.

The previous prime is 317881049. The next prime is 317881073. The reversal of 317881051 is 150188713.

It is a weak prime.

It is an emirp because it is prime and its reverse (150188713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317881051 - 2¹ = 317881049 is a prime.

Together with 317881049, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 317880998 and 317881016.

It is not a weakly prime, because it can be changed into another prime (317831051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158940525 + 158940526.

It is an arithmetic number, because the mean of its divisors is an integer number (158940526).

Almost surely, 2^317881051 is an apocalyptic number.

317881051 is a deficient number, since it is larger than the sum of its proper divisors (1).

317881051 is an equidigital number, since it uses as much as digits as its factorization.

317881051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 34.

The square root of 317881051 is about 17829.2190238384. The cubic root of 317881051 is about 682.4773040975.

The spelling of 317881051 in words is "three hundred seventeen million, eight hundred eighty-one thousand, fifty-one".