316421 has 8 divisors (see below), whose sum is σ = 383040. Its totient is φ = 255168.

The previous prime is 316403. The next prime is 316423. The reversal of 316421 is 124613.

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

It is a cyclic number.

It is not a de Polignac number, because 316421 - 2¹⁸ = 54277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 316421.

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 316421.

It is not an unprimeable number, because it can be changed into a prime (316423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1211 + ... + 1448.

It is an arithmetic number, because the mean of its divisors is an integer number (47880).

2³¹⁶⁴²¹ is an apocalyptic number.

It is an amenable number.

316421 is a deficient number, since it is larger than the sum of its proper divisors (66619).

316421 is a wasteful number, since it uses less digits than its factorization.

316421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683.

The product of its digits is 144, while the sum is 17.

The square root of 316421 is about 562.5131109583. The cubic root of 316421 is about 68.1430810801.

It can be divided in two parts, 316 and 421, that added together give a palindrome (737).

The spelling of 316421 in words is "three hundred sixteen thousand, four hundred twenty-one".