971035397 has 2 divisors, whose sum is σ = 971035398. Its totient is φ = 971035396.

The previous prime is 971035339. The next prime is 971035399. The reversal of 971035397 is 793530179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 922579876 + 48455521 = 30374^2 + 6961^2 .

It is a cyclic number.

It is not a de Polignac number, because 971035397 - 2¹² = 971031301 is a prime.

Together with 971035399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971035399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485517698 + 485517699.

It is an arithmetic number, because the mean of its divisors is an integer number (485517699).

Almost surely, 2^971035397 is an apocalyptic number.

It is an amenable number.

971035397 is a deficient number, since it is larger than the sum of its proper divisors (1).

971035397 is an equidigital number, since it uses as much as digits as its factorization.

971035397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 178605, while the sum is 44.

The square root of 971035397 is about 31161.4408684836. The cubic root of 971035397 is about 990.2503862821.

The spelling of 971035397 in words is "nine hundred seventy-one million, thirty-five thousand, three hundred ninety-seven".