3191291 has 8 divisors (see below), whose sum is σ = 3407184. Its totient is φ = 2978560.

The previous prime is 3191281. The next prime is 3191299. The reversal of 3191291 is 1921913.

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

It is a cyclic number.

It is not a de Polignac number, because 3191291 - 2¹⁰ = 3190267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3191291.

It is not an unprimeable number, because it can be changed into a prime (3191299) 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 7 ways as a sum of consecutive naturals, for example, 1511 + ... + 2943.

It is an arithmetic number, because the mean of its divisors is an integer number (425898).

Almost surely, 2^3191291 is an apocalyptic number.

3191291 is a deficient number, since it is larger than the sum of its proper divisors (215893).

3191291 is a wasteful number, since it uses less digits than its factorization.

3191291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581.

The product of its digits is 486, while the sum is 26.

The square root of 3191291 is about 1786.4184840065. The cubic root of 3191291 is about 147.2274541922.

The spelling of 3191291 in words is "three million, one hundred ninety-one thousand, two hundred ninety-one".