971211 has 8 divisors (see below), whose sum is σ = 1299520. Its totient is φ = 645192.

The previous prime is 971207. The next prime is 971237. The reversal of 971211 is 112179.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 971211 - 2² = 971207 is a prime.

It is an Ulam number.

It is the 986-th Hogben number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 971211.

It is not an unprimeable number, because it can be changed into a prime (971251) by changing a digit.

It is a nontrivial repunit in base 985.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1260 + ... + 1878.

It is an arithmetic number, because the mean of its divisors is an integer number (162440).

2⁹⁷¹²¹¹ is an apocalyptic number.

971211 is a deficient number, since it is larger than the sum of its proper divisors (328309).

971211 is a wasteful number, since it uses less digits than its factorization.

971211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145.

The product of its digits is 126, while the sum is 21.

The square root of 971211 is about 985.5003805174. The cubic root of 971211 is about 99.0310075303.

The spelling of 971211 in words is "nine hundred seventy-one thousand, two hundred eleven".