971912671 has 4 divisors (see below), whose sum is σ = 992591712. Its totient is φ = 951233632.

The previous prime is 971912657. The next prime is 971912687. The reversal of 971912671 is 176219179.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 971912671 - 2⁵ = 971912639 is a prime.

It is a super-2 number, since 2×971912671² = 1889228480100708482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971912171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10339450 + ... + 10339543.

It is an arithmetic number, because the mean of its divisors is an integer number (248147928).

Almost surely, 2^971912671 is an apocalyptic number.

971912671 is a deficient number, since it is larger than the sum of its proper divisors (20679041).

971912671 is a wasteful number, since it uses less digits than its factorization.

971912671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20679040.

The product of its digits is 47628, while the sum is 43.

The square root of 971912671 is about 31175.5139652901. The cubic root of 971912671 is about 990.5485077300.

The spelling of 971912671 in words is "nine hundred seventy-one million, nine hundred twelve thousand, six hundred seventy-one".