3117391 has 8 divisors (see below), whose sum is σ = 3239424. Its totient is φ = 2996760.

The previous prime is 3117299. The next prime is 3117421. The reversal of 3117391 is 1937113.

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 3117391 - 2¹³ = 3109199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3117791) 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, 6816 + ... + 7258.

It is an arithmetic number, because the mean of its divisors is an integer number (404928).

Almost surely, 2^3117391 is an apocalyptic number.

3117391 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3117391 is a deficient number, since it is larger than the sum of its proper divisors (122033).

3117391 is a wasteful number, since it uses less digits than its factorization.

3117391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701.

The product of its digits is 567, while the sum is 25.

The square root of 3117391 is about 1765.6134911129. The cubic root of 3117391 is about 146.0821299336.

The spelling of 3117391 in words is "three million, one hundred seventeen thousand, three hundred ninety-one".