320130311 has 4 divisors (see below), whose sum is σ = 320381112. Its totient is φ = 319879512.

The previous prime is 320130287. The next prime is 320130341. The reversal of 320130311 is 113031023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320130311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320130341) 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, 123476 + ... + 126041.

It is an arithmetic number, because the mean of its divisors is an integer number (80095278).

Almost surely, 2^320130311 is an apocalyptic number.

320130311 is a deficient number, since it is larger than the sum of its proper divisors (250801).

320130311 is a wasteful number, since it uses less digits than its factorization.

320130311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250800.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 320130311 is about 17892.1857524451. The cubic root of 320130311 is about 684.0832113521.

Adding to 320130311 its reverse (113031023), we get a palindrome (433161334).

The spelling of 320130311 in words is "three hundred twenty million, one hundred thirty thousand, three hundred eleven".