320540030343 has 24 divisors (see below), whose sum is σ = 498738528288. Its totient is φ = 197207652672.

The previous prime is 320540030281. The next prime is 320540030383. The reversal of 320540030343 is 343030045023.

It is a happy number.

It is not a de Polignac number, because 320540030343 - 2¹³ = 320540022151 is a prime.

It is a super-2 number, since 2×320540030343² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320540030383) 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 23 ways as a sum of consecutive naturals, for example, 156846 + ... + 815892.

It is an arithmetic number, because the mean of its divisors is an integer number (20780772012).

Almost surely, 2^320540030343 is an apocalyptic number.

320540030343 is a deficient number, since it is larger than the sum of its proper divisors (178198497945).

320540030343 is a wasteful number, since it uses less digits than its factorization.

320540030343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663223 (or 663220 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 27.

Adding to 320540030343 its reverse (343030045023), we get a palindrome (663570075366).

The spelling of 320540030343 in words is "three hundred twenty billion, five hundred forty million, thirty thousand, three hundred forty-three".