311716 has 6 divisors (see below), whose sum is σ = 545510. Its totient is φ = 155856.

The previous prime is 311713. The next prime is 311737. The reversal of 311716 is 617113.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 302500 + 9216 = 550^2 + 96^2 .

It is a junction number, because it is equal to n+sod(n) for n = 311693 and 311702.

It is not an unprimeable number, because it can be changed into a prime (311711) 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 as a sum of consecutive naturals, namely, 38961 + ... + 38968.

2³¹¹⁷¹⁶ is an apocalyptic number.

It is an amenable number.

311716 is a deficient number, since it is larger than the sum of its proper divisors (233794).

311716 is a wasteful number, since it uses less digits than its factorization.

311716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77933 (or 77931 counting only the distinct ones).

The product of its digits is 126, while the sum is 19.

The square root of 311716 is about 558.3153230926. The cubic root of 311716 is about 67.8036434667.

Adding to 311716 its reverse (617113), we get a palindrome (928829).

The spelling of 311716 in words is "three hundred eleven thousand, seven hundred sixteen".