311282113 has 4 divisors (see below), whose sum is σ = 311410260. Its totient is φ = 311153968.

The previous prime is 311282099. The next prime is 311282123.

It is a happy number.

311282113 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 179881744 + 131400369 = 13412^2 + 11463^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311282113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311282123) 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, 60358 + ... + 65311.

It is an arithmetic number, because the mean of its divisors is an integer number (77852565).

Almost surely, 2^311282113 is an apocalyptic number.

It is an amenable number.

311282113 is a deficient number, since it is larger than the sum of its proper divisors (128147).

311282113 is a wasteful number, since it uses less digits than its factorization.

311282113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128146.

The product of its digits is 288, while the sum is 22.

The square root of 311282113 is about 17643.1888557596. The cubic root of 311282113 is about 677.7216953974.

The spelling of 311282113 in words is "three hundred eleven million, two hundred eighty-two thousand, one hundred thirteen".