2991317 has 8 divisors (see below), whose sum is σ = 3453312. Its totient is φ = 2538000.

The previous prime is 2991299. The next prime is 2991353. The reversal of 2991317 is 7131992.

It is a happy number.

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 2991317 - 2⁶ = 2991253 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 (2991367) 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, 1409 + ... + 2822.

It is an arithmetic number, because the mean of its divisors is an integer number (431664).

2^2991317 is an apocalyptic number.

It is an amenable number.

2991317 is a deficient number, since it is larger than the sum of its proper divisors (461995).

2991317 is a wasteful number, since it uses less digits than its factorization.

2991317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4339.

The product of its digits is 3402, while the sum is 32.

The square root of 2991317 is about 1729.5424250362. The cubic root of 2991317 is about 144.0856775369.

The spelling of 2991317 in words is "two million, nine hundred ninety-one thousand, three hundred seventeen".