320023021340 has 48 divisors (see below), whose sum is σ = 733515108480. Its totient is φ = 116313046080.

The previous prime is 320023021333. The next prime is 320023021343. The reversal of 320023021340 is 43120320023.

It is a super-3 number, since 3×320023021340³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320023021343) 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 15 ways as a sum of consecutive naturals, for example, 67859 + ... + 802901.

It is an arithmetic number, because the mean of its divisors is an integer number (15281564760).

Almost surely, 2^320023021340 is an apocalyptic number.

It is an amenable number.

320023021340 is an abundant number, since it is smaller than the sum of its proper divisors (413492087140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320023021340 is a wasteful number, since it uses less digits than its factorization.

320023021340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737042 (or 737040 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 320023021340 its reverse (43120320023), we get a palindrome (363143341363).

The spelling of 320023021340 in words is "three hundred twenty billion, twenty-three million, twenty-one thousand, three hundred forty".