320133493 has 2 divisors, whose sum is σ = 320133494. Its totient is φ = 320133492.

The previous prime is 320133491. The next prime is 320133521. The reversal of 320133493 is 394331023.

It is an a-pointer prime, because the next prime (320133521) can be obtained adding 320133493 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265624804 + 54508689 = 16298^2 + 7383^2 .

It is a cyclic number.

It is not a de Polignac number, because 320133493 - 2¹ = 320133491 is a prime.

Together with 320133491, it forms a pair of twin primes.

It is equal to p_17282017 and since 320133493 and 17282017 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320133491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160066746 + 160066747.

It is an arithmetic number, because the mean of its divisors is an integer number (160066747).

Almost surely, 2^320133493 is an apocalyptic number.

It is an amenable number.

320133493 is a deficient number, since it is larger than the sum of its proper divisors (1).

320133493 is an equidigital number, since it uses as much as digits as its factorization.

320133493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 320133493 is about 17892.2746737244. The cubic root of 320133493 is about 684.0854778725.

The spelling of 320133493 in words is "three hundred twenty million, one hundred thirty-three thousand, four hundred ninety-three".