387317 has 4 divisors (see below), whose sum is σ = 442656. Its totient is φ = 331980.

The previous prime is 387313. The next prime is 387329. The reversal of 387317 is 713783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 387317 - 2² = 387313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 387317.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 387317.

It is not an unprimeable number, because it can be changed into a prime (387313) 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, 27659 + ... + 27672.

It is an arithmetic number, because the mean of its divisors is an integer number (110664).

2³⁸⁷³¹⁷ is an apocalyptic number.

It is an amenable number.

387317 is a deficient number, since it is larger than the sum of its proper divisors (55339).

387317 is an equidigital number, since it uses as much as digits as its factorization.

387317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55338.

The product of its digits is 3528, while the sum is 29.

The square root of 387317 is about 622.3479734039. The cubic root of 387317 is about 72.8935083282.

The spelling of 387317 in words is "three hundred eighty-seven thousand, three hundred seventeen".