971711047 has 2 divisors, whose sum is σ = 971711048. Its totient is φ = 971711046.

The previous prime is 971711021. The next prime is 971711051. The reversal of 971711047 is 740117179.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 971711047 - 2¹⁹ = 971186759 is a prime.

It is a super-3 number, since 3×971711047³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 971710997 and 971711015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971711017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485855523 + 485855524.

It is an arithmetic number, because the mean of its divisors is an integer number (485855524).

Almost surely, 2^971711047 is an apocalyptic number.

971711047 is a deficient number, since it is larger than the sum of its proper divisors (1).

971711047 is an equidigital number, since it uses as much as digits as its factorization.

971711047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12348, while the sum is 37.

The square root of 971711047 is about 31172.2801058889. The cubic root of 971711047 is about 990.4800063202.

The spelling of 971711047 in words is "nine hundred seventy-one million, seven hundred eleven thousand, forty-seven".