320534034541021 has 32 divisors (see below), whose sum is σ = 375893880899328. Its totient is φ = 267602477345280.

The previous prime is 320534034541003. The next prime is 320534034541109. The reversal of 320534034541021 is 120145430435023.

It is not a de Polignac number, because 320534034541021 - 2¹¹ = 320534034538973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320534034541001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 958307391 + ... + 958641811.

It is an arithmetic number, because the mean of its divisors is an integer number (11746683778104).

Almost surely, 2^{320534034541021} is an apocalyptic number.

It is an amenable number.

320534034541021 is a deficient number, since it is larger than the sum of its proper divisors (55359846358307).

320534034541021 is a wasteful number, since it uses less digits than its factorization.

320534034541021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343381.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 320534034541021 its reverse (120145430435023), we get a palindrome (440679464976044).

The spelling of 320534034541021 in words is "three hundred twenty trillion, five hundred thirty-four billion, thirty-four million, five hundred forty-one thousand, twenty-one".