2381317 has 2 divisors, whose sum is σ = 2381318. Its totient is φ = 2381316.

The previous prime is 2381311. The next prime is 2381329. The reversal of 2381317 is 7131832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1718721 + 662596 = 1311^2 + 814^2 .

It is a cyclic number.

It is not a de Polignac number, because 2381317 - 2⁷ = 2381189 is a prime.

It is an Ulam number.

2381317 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2381291 and 2381300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2381311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1190658 + 1190659.

It is an arithmetic number, because the mean of its divisors is an integer number (1190659).

2^2381317 is an apocalyptic number.

It is an amenable number.

2381317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381317 is an equidigital number, since it uses as much as digits as its factorization.

2381317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 2381317 is about 1543.1516451730. The cubic root of 2381317 is about 133.5382674924.

The spelling of 2381317 in words is "two million, three hundred eighty-one thousand, three hundred seventeen".