320135111 has 2 divisors, whose sum is σ = 320135112. Its totient is φ = 320135110.

The previous prime is 320135027. The next prime is 320135117. The reversal of 320135111 is 111531023.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320135111 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320135111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320135117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160067555 + 160067556.

It is an arithmetic number, because the mean of its divisors is an integer number (160067556).

Almost surely, 2^320135111 is an apocalyptic number.

320135111 is a deficient number, since it is larger than the sum of its proper divisors (1).

320135111 is an equidigital number, since it uses as much as digits as its factorization.

320135111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 320135111 is about 17892.3198887120. The cubic root of 320135111 is about 684.0866303588.

Adding to 320135111 its reverse (111531023), we get a palindrome (431666134).

The spelling of 320135111 in words is "three hundred twenty million, one hundred thirty-five thousand, one hundred eleven".