311676349 has 4 divisors (see below), whose sum is σ = 311961564. Its totient is φ = 311391136.

The previous prime is 311676307. The next prime is 311676367. The reversal of 311676349 is 943676113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32285124 + 279391225 = 5682^2 + 16715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311676349 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311679349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140962 + ... + 143155.

It is an arithmetic number, because the mean of its divisors is an integer number (77990391).

Almost surely, 2^311676349 is an apocalyptic number.

It is an amenable number.

311676349 is a deficient number, since it is larger than the sum of its proper divisors (285215).

311676349 is a wasteful number, since it uses less digits than its factorization.

311676349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285214.

The product of its digits is 81648, while the sum is 40.

The square root of 311676349 is about 17654.3577906419. The cubic root of 311676349 is about 678.0076841772.

The spelling of 311676349 in words is "three hundred eleven million, six hundred seventy-six thousand, three hundred forty-nine".