320868311 has 8 divisors (see below), whose sum is σ = 322779600. Its totient is φ = 318962880.

The previous prime is 320868299. The next prime is 320868313. The reversal of 320868311 is 113868023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320868311 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 (320868313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152555 + ... + 154643.

It is an arithmetic number, because the mean of its divisors is an integer number (40347450).

Almost surely, 2^320868311 is an apocalyptic number.

320868311 is a deficient number, since it is larger than the sum of its proper divisors (1911289).

320868311 is a wasteful number, since it uses less digits than its factorization.

320868311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2929.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 320868311 is about 17912.7974085568. The cubic root of 320868311 is about 684.6084828230.

The spelling of 320868311 in words is "three hundred twenty million, eight hundred sixty-eight thousand, three hundred eleven".