971111 has 2 divisors, whose sum is σ = 971112. Its totient is φ = 971110.

The previous prime is 971099. The next prime is 971141. The reversal of 971111 is 111179.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 971111 - 2¹⁰ = 970087 is a prime.

971111 is a modest number, since divided by 1111 gives 97 as remainder.

It is a nialpdrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 971111.

It is not a weakly prime, because it can be changed into another prime (971141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485555 + 485556.

It is an arithmetic number, because the mean of its divisors is an integer number (485556).

2⁹⁷¹¹¹¹ is an apocalyptic number.

971111 is a deficient number, since it is larger than the sum of its proper divisors (1).

971111 is an equidigital number, since it uses as much as digits as its factorization.

971111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63, while the sum is 20.

The square root of 971111 is about 985.4496435638. The cubic root of 971111 is about 99.0276085296.

The spelling of 971111 in words is "nine hundred seventy-one thousand, one hundred eleven".