971141187 has 8 divisors (see below), whose sum is σ = 1305051136. Its totient is φ = 642329352.

The previous prime is 971141179. The next prime is 971141189. The reversal of 971141187 is 781141179.

It is a happy number.

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

It is not a de Polignac number, because 971141187 - 2³ = 971141179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971141189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1274083 + ... + 1274844.

It is an arithmetic number, because the mean of its divisors is an integer number (163131392).

Almost surely, 2^971141187 is an apocalyptic number.

971141187 is a deficient number, since it is larger than the sum of its proper divisors (333909949).

971141187 is a wasteful number, since it uses less digits than its factorization.

971141187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549057.

The product of its digits is 14112, while the sum is 39.

The square root of 971141187 is about 31163.1382726451. The cubic root of 971141187 is about 990.2863461055.

The spelling of 971141187 in words is "nine hundred seventy-one million, one hundred forty-one thousand, one hundred eighty-seven".