317237047 has 2 divisors, whose sum is σ = 317237048. Its totient is φ = 317237046.

The previous prime is 317237021. The next prime is 317237069. The reversal of 317237047 is 740732713.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317237047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317237077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158618523 + 158618524.

It is an arithmetic number, because the mean of its divisors is an integer number (158618524).

Almost surely, 2^317237047 is an apocalyptic number.

317237047 is a deficient number, since it is larger than the sum of its proper divisors (1).

317237047 is an equidigital number, since it uses as much as digits as its factorization.

317237047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 317237047 is about 17811.1495137175. The cubic root of 317237047 is about 682.0161093021.

The spelling of 317237047 in words is "three hundred seventeen million, two hundred thirty-seven thousand, forty-seven".