3117971 has 4 divisors (see below), whose sum is σ = 3148944. Its totient is φ = 3087000.

The previous prime is 3117967. The next prime is 3117991. The reversal of 3117971 is 1797113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1797113 = 347 ⋅5179.

It is a cyclic number.

It is not a de Polignac number, because 3117971 - 2² = 3117967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3117901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15335 + ... + 15536.

It is an arithmetic number, because the mean of its divisors is an integer number (787236).

Almost surely, 2^3117971 is an apocalyptic number.

3117971 is a deficient number, since it is larger than the sum of its proper divisors (30973).

3117971 is a wasteful number, since it uses less digits than its factorization.

3117971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30972.

The product of its digits is 1323, while the sum is 29.

The square root of 3117971 is about 1765.7777323321. Note that the first 4 decimals coincide. The cubic root of 3117971 is about 146.0911890454.

The spelling of 3117971 in words is "three million, one hundred seventeen thousand, nine hundred seventy-one".