311516713 has 4 divisors (see below), whose sum is σ = 311554260. Its totient is φ = 311479168.

The previous prime is 311516683. The next prime is 311516717. The reversal of 311516713 is 317615113.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 53978409 + 257538304 = 7347^2 + 16048^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311516713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311516717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208 + ... + 24961.

It is an arithmetic number, because the mean of its divisors is an integer number (77888565).

Almost surely, 2^311516713 is an apocalyptic number.

It is an amenable number.

311516713 is a deficient number, since it is larger than the sum of its proper divisors (37547).

311516713 is a wasteful number, since it uses less digits than its factorization.

311516713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37546.

The product of its digits is 1890, while the sum is 28.

The square root of 311516713 is about 17649.8360615616. The cubic root of 311516713 is about 677.8919092513.

The spelling of 311516713 in words is "three hundred eleven million, five hundred sixteen thousand, seven hundred thirteen".