320404342541 has 4 divisors (see below), whose sum is σ = 320554839900. Its totient is φ = 320253845184.

The previous prime is 320404342499. The next prime is 320404342591. The reversal of 320404342541 is 145243404023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99171457225 + 221232885316 = 314915^2 + 470354^2 .

It is a cyclic number.

It is not a de Polignac number, because 320404342541 - 2⁶ = 320404342477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320404342498 and 320404342507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320404342591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75245486 + ... + 75249743.

It is an arithmetic number, because the mean of its divisors is an integer number (80138709975).

Almost surely, 2^320404342541 is an apocalyptic number.

It is an amenable number.

320404342541 is a deficient number, since it is larger than the sum of its proper divisors (150497359).

320404342541 is a wasteful number, since it uses less digits than its factorization.

320404342541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150497358.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 320404342541 its reverse (145243404023), we get a palindrome (465647746564).

The spelling of 320404342541 in words is "three hundred twenty billion, four hundred four million, three hundred forty-two thousand, five hundred forty-one".