311828113 has 4 divisors (see below), whose sum is σ = 312148260. Its totient is φ = 311507968.

The previous prime is 311828081. The next prime is 311828129.

311828113 is nontrivially palindromic in base 10.

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 208744704 + 103083409 = 14448^2 + 10153^2 .

It is a cyclic number.

It is not a de Polignac number, because 311828113 - 2⁵ = 311828081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311828173) 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, 158608 + ... + 160561.

It is an arithmetic number, because the mean of its divisors is an integer number (78037065).

Almost surely, 2^311828113 is an apocalyptic number.

It is an amenable number.

311828113 is a deficient number, since it is larger than the sum of its proper divisors (320147).

311828113 is an equidigital number, since it uses as much as digits as its factorization.

311828113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320146.

The product of its digits is 1152, while the sum is 28.

The square root of 311828113 is about 17658.6554697689. The cubic root of 311828113 is about 678.1177133381.

The spelling of 311828113 in words is "three hundred eleven million, eight hundred twenty-eight thousand, one hundred thirteen".