320542407122531 has 16 divisors (see below), whose sum is σ = 375918612456960. Its totient is φ = 270191502686880.

The previous prime is 320542407122507. The next prime is 320542407122579. The reversal of 320542407122531 is 135221704245023.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 320542407122531 - 2³⁴ = 320525227253347 is a prime.

It is a super-2 number, since 2×320542407122531² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320542407122591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16315902176 + ... + 16315921821.

It is an arithmetic number, because the mean of its divisors is an integer number (23494913278560).

Almost surely, 2^{320542407122531} is an apocalyptic number.

320542407122531 is a deficient number, since it is larger than the sum of its proper divisors (55376205334429).

320542407122531 is a wasteful number, since it uses less digits than its factorization.

320542407122531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32631824074.

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 320542407122531 in words is "three hundred twenty trillion, five hundred forty-two billion, four hundred seven million, one hundred twenty-two thousand, five hundred thirty-one".