402317 has 4 divisors (see below), whose sum is σ = 416220. Its totient is φ = 388416.

The previous prime is 402313. The next prime is 402329. The reversal of 402317 is 713204.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 198916 + 203401 = 446^2 + 451^2 .

It is a cyclic number.

It is not a de Polignac number, because 402317 - 2² = 402313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402295 and 402304.

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 402317.

It is not an unprimeable number, because it can be changed into a prime (402313) 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, 6908 + ... + 6965.

It is an arithmetic number, because the mean of its divisors is an integer number (104055).

2⁴⁰²³¹⁷ is an apocalyptic number.

It is an amenable number.

402317 is a deficient number, since it is larger than the sum of its proper divisors (13903).

402317 is a wasteful number, since it uses less digits than its factorization.

402317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13902.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 402317 is about 634.2846364212. The cubic root of 402317 is about 73.8226211797.

The spelling of 402317 in words is "four hundred two thousand, three hundred seventeen", and thus it is an iban number.