971030591 has 2 divisors, whose sum is σ = 971030592. Its totient is φ = 971030590.

The previous prime is 971030561. The next prime is 971030603. The reversal of 971030591 is 195030179.

971030591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 971030591 - 2²⁶ = 903921727 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971030521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485515295 + 485515296.

It is an arithmetic number, because the mean of its divisors is an integer number (485515296).

Almost surely, 2^971030591 is an apocalyptic number.

971030591 is a deficient number, since it is larger than the sum of its proper divisors (1).

971030591 is an equidigital number, since it uses as much as digits as its factorization.

971030591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 971030591 is about 31161.3637538539. The cubic root of 971030591 is about 990.2487525788.

The spelling of 971030591 in words is "nine hundred seventy-one million, thirty thousand, five hundred ninety-one".