7111971 has 6 divisors (see below), whose sum is σ = 10272860. Its totient is φ = 4741308.

The previous prime is 7111963. The next prime is 7111981. The reversal of 7111971 is 1791117.

It is not a de Polignac number, because 7111971 - 2³ = 7111963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7111981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 395101 + ... + 395118.

Almost surely, 2^7111971 is an apocalyptic number.

7111971 is a deficient number, since it is larger than the sum of its proper divisors (3160889).

7111971 is a wasteful number, since it uses less digits than its factorization.

7111971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790225 (or 790222 counting only the distinct ones).

The product of its digits is 441, while the sum is 27.

The square root of 7111971 is about 2666.8278909596. The cubic root of 7111971 is about 192.3076934851.

The spelling of 7111971 in words is "seven million, one hundred eleven thousand, nine hundred seventy-one".