320051311 has 4 divisors (see below), whose sum is σ = 320183512. Its totient is φ = 319919112.

The previous prime is 320051287. The next prime is 320051327. The reversal of 320051311 is 113150023.

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

It is a cyclic number.

It is not a de Polignac number, because 320051311 - 2²⁵ = 286496879 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 (320058311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62400 + ... + 67333.

It is an arithmetic number, because the mean of its divisors is an integer number (80045878).

Almost surely, 2^320051311 is an apocalyptic number.

320051311 is a deficient number, since it is larger than the sum of its proper divisors (132201).

320051311 is a wasteful number, since it uses less digits than its factorization.

320051311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132200.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 320051311 is about 17889.9779485610. The cubic root of 320051311 is about 684.0269352901.

The spelling of 320051311 in words is "three hundred twenty million, fifty-one thousand, three hundred eleven".