311677313 has 2 divisors, whose sum is σ = 311677314. Its totient is φ = 311677312.

The previous prime is 311677283. The next prime is 311677361. The reversal of 311677313 is 313776113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301647424 + 10029889 = 17368^2 + 3167^2 .

It is a cyclic number.

It is not a de Polignac number, because 311677313 - 2⁸ = 311677057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311677313.

It is not a weakly prime, because it can be changed into another prime (311670313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155838656 + 155838657.

It is an arithmetic number, because the mean of its divisors is an integer number (155838657).

Almost surely, 2^311677313 is an apocalyptic number.

It is an amenable number.

311677313 is a deficient number, since it is larger than the sum of its proper divisors (1).

311677313 is an equidigital number, since it uses as much as digits as its factorization.

311677313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938, while the sum is 32.

The square root of 311677313 is about 17654.3850926618. The cubic root of 311677313 is about 678.0083831915.

The spelling of 311677313 in words is "three hundred eleven million, six hundred seventy-seven thousand, three hundred thirteen".