311368313 has 4 divisors (see below), whose sum is σ = 313820160. Its totient is φ = 308916468.

The previous prime is 311368271. The next prime is 311368349. The reversal of 311368313 is 313863113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311368313 - 2¹⁰ = 311367289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (311368613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225733 + ... + 1225986.

It is an arithmetic number, because the mean of its divisors is an integer number (78455040).

Almost surely, 2^311368313 is an apocalyptic number.

It is an amenable number.

311368313 is a deficient number, since it is larger than the sum of its proper divisors (2451847).

311368313 is a wasteful number, since it uses less digits than its factorization.

311368313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451846.

The product of its digits is 3888, while the sum is 29.

The square root of 311368313 is about 17645.6315557137. The cubic root of 311368313 is about 677.7842476783.

The spelling of 311368313 in words is "three hundred eleven million, three hundred sixty-eight thousand, three hundred thirteen".