2117315 has 4 divisors (see below), whose sum is σ = 2540784. Its totient is φ = 1693848.

The previous prime is 2117293. The next prime is 2117317. The reversal of 2117315 is 5137112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2117315 - 2¹⁰ = 2116291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2117317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211727 + ... + 211736.

It is an arithmetic number, because the mean of its divisors is an integer number (635196).

2^2117315 is an apocalyptic number.

2117315 is a deficient number, since it is larger than the sum of its proper divisors (423469).

2117315 is an equidigital number, since it uses as much as digits as its factorization.

2117315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423468.

The product of its digits is 210, while the sum is 20.

The square root of 2117315 is about 1455.0996529448. The cubic root of 2117315 is about 128.4089095890.

The spelling of 2117315 in words is "two million, one hundred seventeen thousand, three hundred fifteen".