2128317 has 8 divisors (see below), whose sum is σ = 2846496. Its totient is φ = 1414512.

The previous prime is 2128309. The next prime is 2128319. The reversal of 2128317 is 7138212.

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

It is not a de Polignac number, because 2128317 - 2³ = 2128309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128319) 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, 298 + ... + 2084.

It is an arithmetic number, because the mean of its divisors is an integer number (355812).

2^2128317 is an apocalyptic number.

It is an amenable number.

2128317 is a deficient number, since it is larger than the sum of its proper divisors (718179).

2128317 is a wasteful number, since it uses less digits than its factorization.

2128317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187.

The product of its digits is 672, while the sum is 24.

The square root of 2128317 is about 1458.8752516922. The cubic root of 2128317 is about 128.6309384126.

The spelling of 2128317 in words is "two million, one hundred twenty-eight thousand, three hundred seventeen".