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316331 = 1916649
BaseRepresentation
bin1001101001110101011
3121001220222
41031032223
540110311
610440255
72455151
oct1151653
9531828
10316331
111a6734
1213308b
13b0ca2
14833d1
1563adb
hex4d3ab

316331 has 4 divisors (see below), whose sum is σ = 333000. Its totient is φ = 299664.

The previous prime is 316321. The next prime is 316339. The reversal of 316331 is 133613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133613 = 532521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-316331 is a prime.

It is a super-2 number, since 2×3163312 = 200130603122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8306 + ... + 8343.

It is an arithmetic number, because the mean of its divisors is an integer number (83250).

2316331 is an apocalyptic number.

316331 is a deficient number, since it is larger than the sum of its proper divisors (16669).

316331 is a wasteful number, since it uses less digits than its factorization.

316331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16668.

The product of its digits is 162, while the sum is 17.

The square root of 316331 is about 562.4331071336. The cubic root of 316331 is about 68.1366197950.

Adding to 316331 its reverse (133613), we get a palindrome (449944).

The spelling of 316331 in words is "three hundred sixteen thousand, three hundred thirty-one".

Divisors: 1 19 16649 316331