97961317 has 2 divisors, whose sum is σ = 97961318. Its totient is φ = 97961316.

The previous prime is 97961287. The next prime is 97961371. The reversal of 97961317 is 71316979.

Together with next prime (97961371) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76143076 + 21818241 = 8726^2 + 4671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97961317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97961387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48980658 + 48980659.

It is an arithmetic number, because the mean of its divisors is an integer number (48980659).

Almost surely, 2^97961317 is an apocalyptic number.

It is an amenable number.

97961317 is a deficient number, since it is larger than the sum of its proper divisors (1).

97961317 is an equidigital number, since it uses as much as digits as its factorization.

97961317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71442, while the sum is 43.

The square root of 97961317 is about 9897.5409572277. The cubic root of 97961317 is about 460.9829594854.

The spelling of 97961317 in words is "ninety-seven million, nine hundred sixty-one thousand, three hundred seventeen".