320133331 has 8 divisors (see below), whose sum is σ = 367259904. Its totient is φ = 273355080.

The previous prime is 320133301. The next prime is 320133347. The reversal of 320133331 is 133331023.

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

It is a cyclic number.

It is not a de Polignac number, because 320133331 - 2¹⁵ = 320100563 is a prime.

It is a super-2 number, since 2×320133331² = 204970699234311122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320133299 and 320133308.

It is not an unprimeable number, because it can be changed into a prime (320133301) 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, 85105 + ... + 88786.

It is an arithmetic number, because the mean of its divisors is an integer number (45907488).

Almost surely, 2^320133331 is an apocalyptic number.

320133331 is a deficient number, since it is larger than the sum of its proper divisors (47126573).

320133331 is a wasteful number, since it uses less digits than its factorization.

320133331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174161.

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

The square root of 320133331 is about 17892.2701466304. The cubic root of 320133331 is about 684.0853624812.

Adding to 320133331 its reverse (133331023), we get a palindrome (453464354).

It can be divided in two parts, 32013 and 3331, that added together give a square (35344 = 188²).

The spelling of 320133331 in words is "three hundred twenty million, one hundred thirty-three thousand, three hundred thirty-one".