320331133 has 4 divisors (see below), whose sum is σ = 323441248. Its totient is φ = 317221020.

The previous prime is 320331103. The next prime is 320331139. The reversal of 320331133 is 331133023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320331133 - 2⁵ = 320331101 is a prime.

It is a super-2 number, since 2×320331133² = 205224069538127378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320331133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320331139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1554903 + ... + 1555108.

It is an arithmetic number, because the mean of its divisors is an integer number (80860312).

Almost surely, 2^320331133 is an apocalyptic number.

It is an amenable number.

320331133 is a deficient number, since it is larger than the sum of its proper divisors (3110115).

320331133 is a wasteful number, since it uses less digits than its factorization.

320331133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110114.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 320331133 is about 17897.7968755934. The cubic root of 320331133 is about 684.2262262822.

Adding to 320331133 its reverse (331133023), we get a palindrome (651464156).

The spelling of 320331133 in words is "three hundred twenty million, three hundred thirty-one thousand, one hundred thirty-three".