2151317 has 8 divisors (see below), whose sum is σ = 2500800. Its totient is φ = 1812384.

The previous prime is 2151301. The next prime is 2151319. The reversal of 2151317 is 7131512.

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

It is not a de Polignac number, because 2151317 - 2⁴ = 2151301 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 (2151319) 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, 2192 + ... + 3017.

It is an arithmetic number, because the mean of its divisors is an integer number (312600).

2^2151317 is an apocalyptic number.

It is an amenable number.

2151317 is a deficient number, since it is larger than the sum of its proper divisors (349483).

2151317 is an equidigital number, since it uses as much as digits as its factorization.

2151317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5275.

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

The square root of 2151317 is about 1466.7368543812. The cubic root of 2151317 is about 129.0926362233.

Adding to 2151317 its reverse (7131512), we get a palindrome (9282829).

The spelling of 2151317 in words is "two million, one hundred fifty-one thousand, three hundred seventeen".