320020134340 has 48 divisors (see below), whose sum is σ = 712470334464. Its totient is φ = 120530678400.

The previous prime is 320020134337. The next prime is 320020134347. The reversal of 320020134340 is 43431020023.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (320020134347) 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, 6952216 + ... + 6998095.

It is an arithmetic number, because the mean of its divisors is an integer number (14843131968).

Almost surely, 2^320020134340 is an apocalyptic number.

It is an amenable number.

320020134340 is an abundant number, since it is smaller than the sum of its proper divisors (392450200124).

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

320020134340 is a wasteful number, since it uses less digits than its factorization.

320020134340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13950388 (or 13950386 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 320020134340 its reverse (43431020023), we get a palindrome (363451154363).

The spelling of 320020134340 in words is "three hundred twenty billion, twenty million, one hundred thirty-four thousand, three hundred forty".