971218263 has 8 divisors (see below), whose sum is σ = 1351260288. Its totient is φ = 619327544.

The previous prime is 971218249. The next prime is 971218289. The reversal of 971218263 is 362812179.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 971218263 - 2¹⁰ = 971217239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971218663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7037745 + ... + 7037882.

It is an arithmetic number, because the mean of its divisors is an integer number (168907536).

Almost surely, 2^971218263 is an apocalyptic number.

971218263 is a deficient number, since it is larger than the sum of its proper divisors (380042025).

971218263 is a wasteful number, since it uses less digits than its factorization.

971218263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14075653.

The product of its digits is 36288, while the sum is 39.

The square root of 971218263 is about 31164.3749014801. The cubic root of 971218263 is about 990.3125439067.

The spelling of 971218263 in words is "nine hundred seventy-one million, two hundred eighteen thousand, two hundred sixty-three".