311913727 has 4 divisors (see below), whose sum is σ = 311951736. Its totient is φ = 311875720.

The previous prime is 311913713. The next prime is 311913731. The reversal of 311913727 is 727319113.

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 is a cyclic number.

It is not a de Polignac number, because 311913727 - 2¹¹ = 311911679 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311913692 and 311913701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311913757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1024 + ... + 24997.

It is an arithmetic number, because the mean of its divisors is an integer number (77987934).

Almost surely, 2^311913727 is an apocalyptic number.

311913727 is a deficient number, since it is larger than the sum of its proper divisors (38009).

311913727 is a wasteful number, since it uses less digits than its factorization.

311913727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38008.

The product of its digits is 7938, while the sum is 34.

The square root of 311913727 is about 17661.0794403966. The cubic root of 311913727 is about 678.1797678858.

The spelling of 311913727 in words is "three hundred eleven million, nine hundred thirteen thousand, seven hundred twenty-seven".