320321104136 has 32 divisors (see below), whose sum is σ = 656067919680. Its totient is φ = 145408132800.

The previous prime is 320321104111. The next prime is 320321104141. The reversal of 320321104136 is 631401123023.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2337620 + ... + 2470851.

It is an arithmetic number, because the mean of its divisors is an integer number (20502122490).

Almost surely, 2^320321104136 is an apocalyptic number.

It is an amenable number.

320321104136 is an abundant number, since it is smaller than the sum of its proper divisors (335746815544).

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

320321104136 is a wasteful number, since it uses less digits than its factorization.

320321104136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809245 (or 4809241 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 320321104136 its reverse (631401123023), we get a palindrome (951722227159).

The spelling of 320321104136 in words is "three hundred twenty billion, three hundred twenty-one million, one hundred four thousand, one hundred thirty-six".