972317167 has 2 divisors, whose sum is σ = 972317168. Its totient is φ = 972317166.

The previous prime is 972317113. The next prime is 972317189. The reversal of 972317167 is 761713279.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972317167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972317767) 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 as a sum of consecutive naturals, namely, 486158583 + 486158584.

It is an arithmetic number, because the mean of its divisors is an integer number (486158584).

Almost surely, 2^972317167 is an apocalyptic number.

972317167 is a deficient number, since it is larger than the sum of its proper divisors (1).

972317167 is an equidigital number, since it uses as much as digits as its factorization.

972317167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132, while the sum is 43.

The square root of 972317167 is about 31182.0006895003. Note that the first 3 decimals coincide. The cubic root of 972317167 is about 990.6859059927.

Subtracting from 972317167 its sum of digits (43), we obtain a square (972317124 = 31182²).

The spelling of 972317167 in words is "nine hundred seventy-two million, three hundred seventeen thousand, one hundred sixty-seven".