• 316 can be written using four 4's:

316 has 6 divisors (see below), whose sum is σ = 560. Its totient is φ = 156.

The previous prime is 313. The next prime is 317. The reversal of 316 is 613.

316 = T_{13} + T_{14} +
T_{15}.

316 is nontrivially palindromic in base 3, base 8 and base 15.

316 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a magnanimous number.

It is an Ulam number.

316 is an undulating number in base 8 and base 15.

It is a plaindrome in base 6, base 11, base 12, base 14 and base 16.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36 + ... + 43.

316 is the 15-th centered triangular number and also the 10-th centered heptagonal number.

It is an amenable number.

316 is a deficient number, since it is larger than the sum of its proper divisors (244).

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

It is an anagram of its base 7 representation: 316 = (631)_{7}.

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

The sum of its prime factors is 83 (or 81 counting only the distinct ones).

The product of its digits is 18, while the sum is 10.

The square root of 316 is about 17.7763888346. The cubic root of 316 is about 6.8112846077.

Multiplying 316 by its sum of digits (10), we get a triangular number (3160 = T_{79}).

Adding to 316 its reverse (613), we get a palindrome (929).

The spelling of 316 in words is "three hundred sixteen", and thus it is an aban number and an oban number.

• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.171 sec. • engine limits •