320481533 has 4 divisors (see below), whose sum is σ = 320585280. Its totient is φ = 320377788.

The previous prime is 320481487. The next prime is 320481571. The reversal of 320481533 is 335184023.

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, and also an emirpimes, since its reverse is a distinct semiprime: 335184023 = 2003 ⋅167341.

It is a cyclic number.

It is not a de Polignac number, because 320481533 - 2²⁰ = 319432957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320481496 and 320481505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320481583) 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, 47093 + ... + 53466.

It is an arithmetic number, because the mean of its divisors is an integer number (80146320).

Almost surely, 2^320481533 is an apocalyptic number.

It is an amenable number.

320481533 is a deficient number, since it is larger than the sum of its proper divisors (103747).

320481533 is a wasteful number, since it uses less digits than its factorization.

320481533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103746.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 320481533 is about 17901.9980169812. The cubic root of 320481533 is about 684.3332941593. Note that the first 3 decimals are identical.

The spelling of 320481533 in words is "three hundred twenty million, four hundred eighty-one thousand, five hundred thirty-three".