320331343541 has 4 divisors (see below), whose sum is σ = 349452374784. Its totient is φ = 291210312300.

The previous prime is 320331343529. The next prime is 320331343601. The reversal of 320331343541 is 145343133023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320331343541 is a prime.

It is a super-2 number, since 2×320331343541² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320331343498 and 320331343507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320331343741) 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, 14560515605 + ... + 14560515626.

It is an arithmetic number, because the mean of its divisors is an integer number (87363093696).

Almost surely, 2^320331343541 is an apocalyptic number.

It is an amenable number.

320331343541 is a deficient number, since it is larger than the sum of its proper divisors (29121031243).

320331343541 is a wasteful number, since it uses less digits than its factorization.

320331343541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29121031242.

The product of its (nonzero) digits is 38880, while the sum is 32.

Adding to 320331343541 its reverse (145343133023), we get a palindrome (465674476564).

The spelling of 320331343541 in words is "three hundred twenty billion, three hundred thirty-one million, three hundred forty-three thousand, five hundred forty-one".