311868113 has 2 divisors, whose sum is σ = 311868114. Its totient is φ = 311868112.

The previous prime is 311868107. The next prime is 311868133.

311868113 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306355009 + 5513104 = 17503^2 + 2348^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 311868113 - 2¹² = 311864017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311868113.

It is not a weakly prime, because it can be changed into another prime (311868133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155934056 + 155934057.

It is an arithmetic number, because the mean of its divisors is an integer number (155934057).

Almost surely, 2^311868113 is an apocalyptic number.

It is an amenable number.

311868113 is a deficient number, since it is larger than the sum of its proper divisors (1).

311868113 is an equidigital number, since it uses as much as digits as its factorization.

311868113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 32.

The square root of 311868113 is about 17659.7880225103. The cubic root of 311868113 is about 678.1467074620.

The spelling of 311868113 in words is "three hundred eleven million, eight hundred sixty-eight thousand, one hundred thirteen".