63317971 has 2 divisors, whose sum is σ = 63317972. Its totient is φ = 63317970.

The previous prime is 63317957. The next prime is 63318001. The reversal of 63317971 is 17971336.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63317971 - 2¹⁷ = 63186899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63317971.

It is not a weakly prime, because it can be changed into another prime (63317941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31658985 + 31658986.

It is an arithmetic number, because the mean of its divisors is an integer number (31658986).

Almost surely, 2^63317971 is an apocalyptic number.

63317971 is a deficient number, since it is larger than the sum of its proper divisors (1).

63317971 is an equidigital number, since it uses as much as digits as its factorization.

63317971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 37.

The square root of 63317971 is about 7957.2590130019. The cubic root of 63317971 is about 398.5740288061.

The spelling of 63317971 in words is "sixty-three million, three hundred seventeen thousand, nine hundred seventy-one".