971863097 has 2 divisors, whose sum is σ = 971863098. Its totient is φ = 971863096.

The previous prime is 971863093. The next prime is 971863099. The reversal of 971863097 is 790368179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 683508736 + 288354361 = 26144^2 + 16981^2 .

It is an emirp because it is prime and its reverse (790368179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 971863097 - 2² = 971863093 is a prime.

Together with 971863099, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (971863093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485931548 + 485931549.

It is an arithmetic number, because the mean of its divisors is an integer number (485931549).

Almost surely, 2^971863097 is an apocalyptic number.

It is an amenable number.

971863097 is a deficient number, since it is larger than the sum of its proper divisors (1).

971863097 is an equidigital number, since it uses as much as digits as its factorization.

971863097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 971863097 is about 31174.7188760380. The cubic root of 971863097 is about 990.5316659265.

The spelling of 971863097 in words is "nine hundred seventy-one million, eight hundred sixty-three thousand, ninety-seven".